Dec 3, 2024 · People often wonder, “How long is a PhD dissertation?” These projects are typically 100 to 250 pages long, though dissertations on complex topics may total more than 400 pages. Writing a dissertation allows you to develop advanced expertise on your chosen research topic. ... Jul 18, 2024 · An undergraduate thesis is likely to be about 20 to 50 pages long. A Master’s thesis is likely to be between 30 and 100 pages in length and a PhD dissertation is likely to be between 50 and 450 pages long. In the table below I highlight the typical length of an undergraduate, master’s, and PhD. ... Jan 16, 2024 · How long should a dissertation introduction be? The unofficial rule is 10 percent of the entire paper , so if your dissertation is 20,000 words, your introduction should be about 2,000 words. Keep in mind this is a rough estimate, as your introduction could vary. ... Jul 23, 2024 · My PhD dissertation was 256 pages long. It was full of schematics, diagrams, and tables to demonstrate and communicate my findings. I would say that most people’s PhD thesis experience will be closer to mine than Prof George Bernard Danzig’s. Why PhD dissertations are typically so long. PhD dissertations are often over 200 pages long. ... A master’s dissertation is typically 12,000–50,000 words; A PhD thesis is typically book-length: 70,000–100,000 words; However, none of these are strict guidelines – your word count may be lower or higher than the numbers stated here. Always check the guidelines provided by your university to determine how long your own dissertation ... ... However, from the analysis of over 100 PhD theses, the average thesis length is between 80,000 and 100,000 words. A further analysis of 1000 PhD thesis shows the average number of pages to be 204. In reality, the actual word count for each PhD thesis will depend on the specific subject and the university it is being hosted by. ... Dec 30, 2023 · The purpose of a Ph.D. dissertation extends far beyond a graduation requirement; it is a scholarly rite of passage that marks one’s entry into the ranks of contributing intellectuals. B. The Dissertation’s Role in Academic Knowledge. The dissertation, in essence, is a torchbearer of academic knowledge. ... A typical dissertation runs between 250 and 300 pages, divided into four or five chapters, often with a short conclusion following the final full-scale chapter.There is no set minimum or maximum length, but anything below about 225 pages will likely look insubstantial in comparison to others, while anything over 350 pages may suggest a lack of proportion and control of the topic, and would ... ... Typically, the standard PhD dissertation is 60,000-80,000 words in length, but there is no one size fits all solution. What is definitely known is that a PhD thesis is significantly larger than an MA dissertation. However, it is important to note that PhD thesis writing is about critical analysis, novelty in research and quality of writing ... ... 4 days ago · How Long Is a Dissertation for PhD? Dissertations can vary in length, but they are usually at least 100 pages. Some are 300 pages or longer. Papers between 100 and ... ... ">

The Complete Guide to Writing a Dissertation

Matt Ellis

A dissertation is a lengthy research paper written as a requirement to earn an academic degree. Typically, students must write a dissertation toward the end of their program to prove their knowledge and contribute new research to their field. Whether a student earns the degree depends on the quality of their paper and how it is presented.

Dissertations are one of the most difficult research papers to write, involving much of a student’s time, focus, and energy. While they follow the basics of a research paper , dissertations have areas that regular research papers don’t. Below, we provide a foundational primer to help you write a dissertation without getting overwhelmed.

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Table of contents

What is a dissertation, how long is a dissertation, dissertation structure and requirements, how to write a dissertation step-by-step, how to write a dissertation faqs.

Think of a dissertation as the “final exam” for earning certain academic degrees. Although different schools in different countries have their own procedures, in general students submit a dissertation with the help of an adviser, and the dissertation is then reviewed by experts in the field to see if it qualifies for the degree. Often, the student must also give an oral presentation on their topic, known as a dissertation defense .

The term dissertation itself is often used interchangeably with thesis paper . It gets confusing because different countries use these terms in different ways. For example, in the United States, dissertation is used when completing a doctorate, while thesis is used for bachelor’s or master’s degrees. In the UK and Ireland, those are reversed, with dissertation relating to undergraduate degrees.

Dissertations can be either empirical or nonempirical , depending on the field of study. Empirical dissertations (or quantitative dissertations) are common for the sciences; they require students to collect original data, with the methods of research also reviewed. Nonempirical dissertations (or qualitative dissertations) instead rely on existing data, although students are expected to provide original and inventive analyses.

Although dissertations are technically research papers, writing them is far more involved and technical than other school papers. To write a dissertation, you use a more complex format, with sections for literature reviews, appendices , and methodology, among others.

There is no universal answer to “how long is a dissertation?” The page length or word count varies depending on the degree, field of study, school, and country.

But here are some rough estimates to give you an idea of what to expect:

  • Bachelor’s: 10,000–15,000 words (35–50 pages)
  • Master’s: 18,000–22,000 words (65–80 pages)
  • Doctorate: 80,000–100,000 words (200–300 pages)

As you can see, a doctoral dissertation is a serious investment—you’re essentially writing a book. Keep in mind, however, that these figures are only estimates, and that actual lengths are more flexible. For example, dissertations for science, technology, engineering, and math fields tend to be shorter than non-STEM dissertations.

The focus of your dissertation title page is— surprise! —your title. The title of your dissertation should succinctly explain the topic you’re discussing and directly relate to your research question or thesis statement. Anyone who reads the title should understand what you’re writing about.

As for formatting the title page, that depends on the school and style. Often, you’ll include the name of the university and your program, as well as the date. Check with your adviser for specific details.

Acknowledgment

This optional section gives you the chance to thank anyone who helped you write your dissertation, in the same vein as a dedication page or acceptance speech. If you choose to include this, try to keep it formal and as brief as possible.

The abstract is a short summary of the dissertation that comes at the beginning of the paper. It outlines all the major points your paper discusses and often mentions the methodology briefly. Abstracts should be only one paragraph, about 300 to 500 words.

The term abstract is often used interchangeably with executive summary . While common usage suggests they’re the same, they’re technically different: An executive summary discusses the findings or conclusion of the research, whereas an abstract does not.

The table of contents lists all titles for chapters, headings, and subheadings, as well as their corresponding page numbers. Moreover, the table of contents also includes the supplementary sections—such as the bibliography , appendices, and optional sections like a glossary, list of abbreviations, or a list of figures and tables.

List of figures and tables

Data-heavy dissertations may include multiple visual aids, such as figures or tables. If your dissertation uses a lot of these visuals, you can include a full list of them with their page numbers at the beginning of the paper. Think of this like a table of contents for images and charts.

List of abbreviations

Similarly, if your dissertation includes a lot of abbreviations , you should include an alphabetized key at the beginning of the paper that explains what each stands for. This is especially important if your dissertation relies on abbreviations specific to a certain field that readers outside the field may not recognize.

A glossary defines the complicated words used in your paper, kind of like a mini-dictionary. Like the list of abbreviations, the glossary comes in handy if you use a lot of jargon that won’t be understood by readers outside your field.

Introduction

The first of the “core chapters” and the de facto beginning of your paper, your introduction sets up your research topic and provides the necessary background context to understand it. Here, you plainly state your thesis statement or research question and give a glimpse of how your paper discusses it.

The introduction is typically structured with each chapter getting its own brief summary. It should hint at your methodology and outline your approach (without going into too much detail), as well as explain the current state of the topic’s research so the reader knows where your dissertation fits in.

How long should a dissertation introduction be? The unofficial rule is 10 percent of the entire paper , so if your dissertation is 20,000 words, your introduction should be about 2,000 words. Keep in mind this is a rough estimate, as your introduction could vary.

Literature review

During your research, you will have collected and examined the top primary and secondary sources relevant to your topic. As the name suggests, literature reviews are where you evaluate and comment on these sources, not only summarizing their findings but also pointing out flaws and drawing connections between them.

One of the key concepts in a literature review is the research gap , which refers to specific areas of a topic that have not yet been sufficiently researched. These “blind spots” make the best topics for dissertations, and your goal should be filling them in with new data or analysis. The literature review should fully explain the research gap and how your dissertation rectifies it.

Another important aspect of the literature review is defining your theoretical framework , the preexisting theories on which your own research relies. In other words, the theoretical framework is everything your reader needs to know about your topic that has already been proved or established.

Methodology

The methodology chapter describes how you conducted your research, so the reader can verify its credibility. Typically, you go into detail about how you collected your data, administered tests, and analyzed the data, as well as why you chose the methods you did. You also name any tools or equipment used in your research and state concrete information, such as where and when you conducted tests.

You can also mention any obstacles or setbacks here. If your topic has some biases, mention how your methods avoided those biases.

The nucleus of your dissertation, the results chapter thoroughly explores your findings. This is where you present your data or original analysis, along with any visual aids, such as graphs or charts.

For empirical dissertations, structure the results section by individual data findings, analyzed in depth one by one. For nonempirical dissertations, structure this section by themes, patterns, or trends you’ve noticed in your research.

Don’t forget to relate your findings back to the central research question or thesis statement.

The discussion chapter contextualizes the findings laid out in the previous chapter. What does the data mean for this topic? Did it fit into the theoretical framework? How does it change the way we think? These are the kinds of themes the discussion chapter expounds on.

Feel free to talk about any surprises or unexpected results you had. Transparency is encouraged as a way to establish credibility, so this is a good place to share your personal opinions on how the research went.

As with all research paper conclusions , dissertation conclusions tie everything together. This chapter, the last of the core chapters, should reevaluate your thesis statement or clearly answer your research question. Remember not to present any new data or evidence in the conclusion, but rather review and reiterate the findings you presented earlier.

Bibliography

The bibliography lists the full citations of all the sources used, along with their publishing information. In APA style, the bibliography is called a reference page , while in MLA it’s called a works cited page .

Bibliographies have a specific format, depending on the style you use. Be sure to check our citation guides for APA , MLA , and Chicago styles so you know which rules to follow.

The appendices are different sections of nonessential materials that are still relevant to the topic. While the essential materials should go in the body of the paper, supplemental materials—such as maps, interview transcripts, or tangential explanations—should come at the end of this section. Each piece of content is known as an appendix , the singular form of appendices .

1 Choose the best topic

Choosing a topic is of the utmost importance in dissertations, especially for doctorates. You need to ensure not only that your research matters but also that you have enough substance to fill the page requirement.

When choosing a topic, try to frame your ideas in the format of a thesis statement or research question. A thesis statement is a single sentence that encompasses the central point you’re trying to make, while a research question simply poses a question that your research aims to answer.

As we mentioned above in relation to literature reviews, look for a research gap in areas you’re interested in. Which aspects of these topics have not been thoroughly researched or require more data? These make the best dissertation topics.

2 Conduct preliminary research

Once you’ve decided your topic, do some preliminary research until you have a good overview of its current state. You won’t need to fully answer your research question just yet, but after this step you should at least know where to look.

As you review sources , make a note of any substantial findings or prevalent theories in your topic. Jot down any questions you have so you can find the answers later. Also, start thinking about how you will structure your dissertation; this comes in handy when submitting a research proposal.

3 Submit a research proposal

For advanced dissertations, such as those for doctoral programs, you may need to submit a research proposal before you begin. Here, you discuss your intentions for your dissertation, including how you plan to address a research gap and what methodology you’ll use. The proposal is then accepted or rejected by your supervisor, based on its merits.

4 Conduct principal research

Once your preliminary research is finished and your proposal accepted, it’s time to begin one of the most important steps in how to write a dissertation: principal research.

The goal here is to learn as much as you can about your topic, ideally accounting for all available knowledge researchers have amassed up to this point. You’ll want to define the precise parameters of your research gap so you know exactly what to test or analyze yourself.

You’ll also want to review primary sources (reference materials directly related to an event—e.g., eye-witness accounts or raw data from experiments) and secondary sources (reference materials from secondhand sources—books interpreting historical events, analyses of raw data, etc.).

5 Outline your dissertation

A research paper outline helps you structure your dissertation before you write it. The outline is not an official part of dissertations, but it is extremely helpful for organization. You can rearrange topics, points, and evidence before those parts are written.

Your dissertation outline should cover what you intend to talk about in the core chapters (introduction, literature review, methodology, results, discussion, and conclusion). If you intend to use direct quotes or passages, make a note of where to find them in your outline so you don’t have to go searching again.

6 Write the first draft

It could take days, months, or even years to write a dissertation, so hunker down for the long haul. If you put a lot of thought into your outline, writing the first draft is just a matter of following along and fleshing out the ideas.

The body of your paper should be simple enough; simply present the data or analysis as best you can, point by point. Your research and findings will speak for themselves.

A lot of students have trouble with writing an introduction . The introduction chapter can be more challenging because it involves thinking broadly and abstractly, as opposed to simply listing details. Likewise, the research paper conclusion also requires a more general treatment of the topic and can be harder to write.

7 Consult your adviser

Your adviser is there to help you throughout the entire process of writing a dissertation. Feel free to ask them any questions you have, and regularly check in with them while you write the first draft.

When your first draft is finished, ask your adviser to take a look at it. They’ll be able to spot any problem areas or point you in a new direction. Don’t be afraid to ask—that’s what they’re there for.

8 Gather feedback

In addition to feedback from your adviser, see if anyone else can review your work. Ideally, you could have someone experienced in your field offer a professional opinion, but anyone knowledgeable in dissertations can provide you with useful insight in how to improve yours. The more feedback you get before the final draft, the better.

9 Write the final draft

After compiling all your feedback, write a final draft incorporating all the changes and improvements. While some parts might remain untouched, others may have to be completely rewritten. This is also a good opportunity to cut any areas that don’t directly relate to your main topic. At the same time, you may need to add entirely new sections for issues that weren’t addressed in the first draft.

10 Edit and proofread

The last step before submitting your dissertation is to correct any mistakes and finish up your edits. We recommend going through your dissertation a few times, and at least once with a focus on finding grammar mistakes or misspellings. Feel free to run your paper through our online spell-checker to highlight any spelling mistakes.

11 Defend your dissertation

In certain programs, you’re required to give an oral presentation to a panel of experts on your dissertation topic. This is called a dissertation defense , as the panel will ask challenging questions to make sure your research and findings are reliable.

A dissertation defense can be a nerve-racking experience, not only because it involves public speaking but also because it influences whether you receive the degree. Try your best to stay calm and remind yourself that almost everyone with an advanced degree has gone through it—and if all goes well, you won’t have to do it again!

Dissertation examples

Dissertations are vastly different, with varying styles depending on the subject, method of research, school, country, and type of degree. Looking at dissertation examples is often useful, but make sure to choose a dissertation example that’s most similar to the one you’re writing.

We recommend searching the NDLTD for a dissertation close to yours. This database allows you to search over 6 million online dissertations by keyword and filter results by language, year, or tag.

A dissertation is a lengthy research paper written as a requirement to earn an academic degree. Typically, students must write a dissertation toward the end of their program to both prove their knowledge and contribute new research to their field. The term dissertation is sometimes used interchangeably with thesis paper .

What is the purpose of a dissertation?

There are two main purposes of a dissertation. First, it proves a student has the adequate knowledge, skill, and understanding to earn their degree and advance into more challenging fields. Second, it contributes new and original research in an academic area with a “research gap.”

What are the critical elements of a dissertation?

The core chapters of a dissertation are the introduction, literature review, methodology, results, discussion, and conclusion. In addition, there are also supplementary sections, such as the appendices, bibliography, glossary, and abstract.

how long is a dissertation for doctorate

Academia Insider

How long is a PhD dissertation? [Data by field]

The final piece of the PhD journey is the PhD dissertation. It takes many years to accumulate enough original and new data to fill out a dissertation to the satisfaction of experts in your field. Interestingly, the PhD dissertation length and content vary significantly based on the field you are studying and the publishing conventions.

A PhD can be anywhere from 50 pages to over 450 pages long. This equates to between about 20,000 words to 100,000 words. Most PhD theses are between 60,000 and 80,000 words long excluding contents, citations and references.

A PhD thesis contains different sections including an introduction, methods, results and discussion, conclusions, further work, and references. Each one of these different sections will vary in length depending on the field of study and your particular topic.

Ultimately, a PhD dissertation should contain as many pages and words as it takes to communicate the results of your multi-year investigation.

It is very rewarding to see your thesis come together as you are writing day after day. When I was writing my PhD dissertation I wrote the sections separately and my heart filled with joy when I finally put them all together and compile them into a single PDF document.

Counting the pages should not be the way to determine a PhD dissertation’s value but it certainly helps when your thesis is starting to look substantial in thickness.

How many pages should a PhD dissertation be?

A PhD dissertation should contain as many pages and words as it takes to outline the current state of your field and provide adequate background information, present your results, and provide confidence in your conclusions. A PhD dissertation will also contain figures, graphs, schematics, and other large pictorial items that can easily inflate the page count.

Here is a boxplot summary of many different fields of study and the number of pages of a typical PhD dissertation in the field. It has been created by Marcus Beck from all of the dissertations at the University of Minnesota.

how long is a dissertation for doctorate

Typically, the mathematical sciences, economics, and biostatistics theses and dissertations tend to be shorter because they rely on mathematical formulas to provide proof of their results rather than diagrams and long explanations.

On the other end of the scale, English, communication studies, political science, history and anthropology are often the largest theses in terms of pages and word count because of the number of words it takes to provide proof and depth of their results.

At the end of the day, it is important that your thesis gets signed off by your review committee and other experts in the field. Your supervisor will be the main judge of whether or not your dissertation is capable of satisfying the requirements of a PhD in your field.

If you want to know more about how long a Masters’s thesis and PhD dissertation is you can check out my other articles:

  • How Long is a Masters Thesis? [Your writing guide]
  • How long is a Thesis or dissertation? [the data]

Can a PhD dissertation be too long?

A PhD thesis should contain enough evidence and discussion to report on the most significant findings of your PhD research.

A PhD dissertation should not contain everything that you have done during your PhD. It should only include the data and information required to convince your PhD examining body that wraps up and tells the full story of particular lines of investigation.

Including random results, thoughts, or superfluous explanation can result in a dissertation that is unfocused. I have heard of music PhD is being described as too verbose and physical sciences PhD dissertations as being unfocused.

Therefore, a PhD thesis can be too long if the information it contains does not form a full and cohesive story.

One of my colleagues during their PhD removed an entire chapter from the thesis after writing it as the supervisor said that it needed more experiments to be a full story. They did not want to spend the next six months gathering the data and simply removed the chapter altogether.

How short can PhD dissertation be?

The shortest PhD dissertations are typically found in mathematics.

George Bernard Danzig was an American mathematical scientist who made contributions to industrial engineering and many other mathematical-related fields. An interesting miscommunication led to 1 of the shortest PhD theses ever.

In 1939 his professor wrote two problems on the blackboard and Danzig thought they were homeless assignments. He stated that they were harder than usual but handed in solutions to the surprise of the professor.

They were, in fact, open mathematical problems in statistics.

His professor said to bind the solution to the two problems together and submit them as his thesis – the total thesis length = 14 pages.

Obviously, most PhD theses and dissertations will be so much longer than that!

My PhD dissertation was 256 pages long. It was full of schematics, diagrams, and tables to demonstrate and communicate my findings.

I would say that most people’s PhD thesis experience will be closer to mine than Prof George Bernard Danzig’s.

Why PhD dissertations are typically so long

PhD dissertations are often over 200 pages long.

One of the primary reasons they are so long is that it is a single document that summarises many years of hard work. Also, summarising the research field to date and making sure that all of your references and citations are included so you avoid plagiarism will bolster the word count of the thesis dramatically.

Here are all of the reasons PhD dissertations tend to be so long.

Many years of work

PhD theses or dissertations contain many years of research and analysis.

In many of my YouTube videos I recommend that a PhD student work towards their PhD thesis by doing at least three hours of focused work every work day.

This amount of work quickly adds up.

Of course, not every bit of work makes it into the PhD dissertation but a lot of it does. It can be difficult to work out what to include or leave out of your thesis.

As a PhD student, I perfected the art of turning one experiment into many different types of grafts and schematics to fully explore the limits of my data. The graphs can take up a lot of space in your PhD thesis and, therefore, bolster the page count significantly.

In depth literature review

One of the most substantial parts of a PhD dissertation is the literature review.

The literature review can take up a huge portion of the early part of your PhD dissertation depending on the amount of data and publications in your field.

Writing an in-depth literature review requires just as much meticulous data analysis and searching as the central part of your dissertation.

Figures and schematics

Some fields end up producing a lot of figures and schematics.

My thesis had many full-page figures of atomic force microscopy experiments with much more explanation on subsequent pages.

how long is a dissertation for doctorate

As they say, a picture paints a thousand words and a dissertation can really benefit from having many schematics to highlight the important aspects of your findings.

References and citations

The recommended PhD dissertation word count from an institution or university does not include citations, references, or other thesis parts such as summary of abbreviations, table of figures, et cetera.

However, these components of your dissertation can take up many pages and add to the overall thickness of your PhD dissertation.

University formatting rules

University formatting rules will also dictate how you many pages your words take up.

I often get roasted on my YouTube channel for having doublespaced lines and wide margins. Unfortunately, this layout was dictated by my university before printing.

PhD dissertations often end up going into long-term storage and therefore, need to adhere to archival and standardised formatting rules.

Deep in the depths of the University of Newcastle, there is a copy of my thesis on a shelf. The formatting and binding rules mean that my thesis looks like everyone else’s.

Universities will often have their own requirements for PhD dissertation cover colour, quality, and type of paper. Even the quality of the paper can change the thickness of the PhD dissertation significantly.

PhD by publication

It is becoming increasingly common to submit a number of peer-reviewed papers bound together with supplementary information in between instead of a PhD dissertation.

The benefits of this to the researcher and university are:

  • More early career peer-reviewed journals for career advancement
  • an easier review process – they have already been peer-reviewed
  • an early focus on publishing means better research outcomes for the researcher, supervisor, and Department.
  • No mad rush at the end to finish a thesis
  • continually writing peer-reviewed papers throughout your PhD helps with timely analysis and communication of results

Even though this option has been available to PhD students for a number of years, I have only known a handful of students actually submit their PhD via publication.

Nonetheless, having this option will suit some research fields better than others and lead to a more productive PhD.

Wrapping up

This article has been through everything you need to know about the length of a PhD dissertation and the common lengths of PhD dissertations for various fields.

Ultimately, there is no predefined length of a PhD .

A PhD thesis is as long as it needs to be to convince your examiners that you have contributed significantly enough to an academic field to be awarded the title of Dr of philosophy.

Mathematical and analytical theses tend to be shorter and can be as short as 50 pages (with one of the shortest being only 14 pages long). At the other end of the spectrum, PhD students in anthropology and history tend to produce the longest dissertations.

how long is a dissertation for doctorate

Dr Andrew Stapleton has a Masters and PhD in Chemistry from the UK and Australia. He has many years of research experience and has worked as a Postdoctoral Fellow and Associate at a number of Universities. Although having secured funding for his own research, he left academia to help others with his YouTube channel all about the inner workings of academia and how to make it work for you.

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how long is a dissertation for doctorate

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how long is a dissertation for doctorate

how long is a dissertation for doctorate

  • How Long Is a PhD Thesis?
  • Doing a PhD

It’s no secret that one of the most challenging aspects of a PhD degree is the volume of work that goes into writing your thesis . So this raises the question, exactly how long is a thesis?

Unfortunately, there’s no one size fits all answer to this question. However, from the analysis of over 100 PhD theses, the average thesis length is between 80,000 and 100,000 words. A further analysis of 1000 PhD thesis shows the average number of pages to be 204 . In reality, the actual word count for each PhD thesis will depend on the specific subject and the university it is being hosted by. This is because universities set their own word length requirements, with most found to be opting for around 100,000.

To find out more about how these word limits differ between universities, how the average word count from STEM thesis differ from non-STEM thesis and a more detailed breakdown from the analysis of over 1000 PhDs, carry on reading the below.

Word Count Differences Between Universities

For any PhD student writing a thesis, they will find that their document will be subject to a word limit set by their university. In nearly all cases, the limit only concerns the maximum number of words and doesn’t place any restrictions on the minimum word limit. The reason for this is that the student will be expected to write their thesis with the aim of clearly explaining their research, and so it is up to the student to determine what he deems appropriate.

Saying this, it is well accepted amongst PhD students and supervisors that the absence of a lower limit doesn’t suggest that a thesis can be ‘light’. Your thesis will focus on several years worth of original research and explore new ideas, theories or concepts. Besides this, your thesis will need to cover a wide range of topics such as your literature review, research methodology, results and conclusion. Therefore, your examiners will expect the length of your thesis to be proportional to convey all this information to a sufficient level.

Selecting a handful of universities at random, they state the following thesis word limits on their website:

  • University of Edinburgh: 100,000
  • University of Exeter: 100,000
  • University of Leister: 80,000
  • University of Bath: 80,000
  • University of Warwick: 70,000

The above universities set upper word limits that apply across the board, however, some universities, such as the University of Birmingham and the University of Sheffield, set different word limits for different departments. For example, the University of Sheffield adopts these limits:

  • Arts & Humanities: 75,000
  • Medicine, Dentistry & Health: 75,000
  • Science: 80,000
  • Social Sciences: 75,000-100,000

Although there’s a range of limit, it’s safe to say that the majority fall within the 80,000 to 100,000 bracket.

Word Count Based on Data from past Theses

A poll of 149 postdocs.

In mid-2019, Dr Eva Lantsoght, a published author, academic blogger and Structural Engineering Professor, conducted a poll which asked postgraduate doctoral students to share the length of their final thesis. 149 PostDoc students responded to the survey, with the majority reporting a length falling within the ‘80,000 – 120,000 words’ bracket as seen below.

DiscoverPhDs_How-long-is-a-PhD-Thesis_Poll

Analysis of 1000 PhD Theses

Over a three-year time period, Dr Ian Brailsford, a then Postgraduate Learning Adviser at the University of Auckland, analysed 1000 doctoral thesis submitted to his university’s library. The PhD theses which formed the basis of his analysis were produced between 2008 to 2017 and showed:

  • Average number of pages = 204
  • Median number of pages = 198
  • Average number of chapters = 7.6

We should note that the above metrics only cover the content falling within the main body of the thesis. This includes the introduction, literature review, methods section, results chapter, discussions and conclusions. All other sections, such as the title page, abstract, table of contents, acknowledgements, bibliography and appendices were omitted from the count.

Although it’s impossible to draw the exact word count from the number of pages alone, by using the universities recommended format of 12pt Times New Roman and 1.5 lines spacing, and assuming 10% of the main body are figures and footnotes, this equates to an average main body of 52,000 words.

STEM vs Non-STEM

As part of Dr Ian Brailsford’s analysis, he also compared the length of STEM doctorate theses to non-STEM theses. He found that STEM theses tended to be shorter. In fact, he found STEM theses to have a medium page length of 159 whilst non-STEM theses had a medium of around 223 pages. This is a 40% increase in average length!

Can You Exceed the Word Count?

Whilst most universities will allow you to go over the word count if you need to, it comes with the caveat that you must have a very strong reason for needing to do so. Besides this, your supervisor will also need to support your request. This is to acknowledge that they have reviewed your situation and agree that exceeding the word limit will be absolutely necessary to avoid detriment unnecessary detriment to your work.

This means that whilst it is possible to submit a thesis over 100,000 words or more, it’s unlikely that your research project will need to.

How Does This Compare to a Masters Dissertation?

The average Masters dissertation length is approximately 20,000 words whilst a thesis is 4 to 5 times this length at approximately 80,000 – 100,000.

The key reason for this difference is because of the level of knowledge they convey. A Master’s dissertation focuses on concluding from existing knowledge whilst a PhD thesis focuses on drawing a conclusion from new knowledge. As a result, the thesis is significantly longer as the new knowledge needs to be well documented so it can be verified, disseminated and used to shape future research.

Finding a PhD has never been this easy – search for a PhD by keyword, location or academic area of interest.

Related Reading

Unfortunately, the completion of your thesis doesn’t mark the end of your degree just yet. Once you submit your thesis, it’s time to start preparing for your viva – the all-to-fun thesis defence interview! To help you prepare for this, we’ve produced a helpful guide which you can read here: The Complete Guide to PhD Vivas.

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How Long Should Be PhD Dissertation? Unlocking The Mystery of PhD Thesis Length

PhD Dissertation length

Embarking on the journey of a PhD is a scholarly endeavour that demands not only intellectual prowess but also a deep commitment to contributing valuable insights to the academic world. At the heart of this rigorous pursuit lies the dissertation, a magnum opus that serves as the pinnacle of one’s academic achievement. Yet, as aspiring scholars delve into the realms of research and knowledge creation, a pivotal question looms large: How long should a Ph.D. dissertation be?

The optimal length of a Ph.D. dissertation is a strategic equilibrium, determined by the intricate interplay of research complexity, disciplinary norms, and institutional guidelines, emphasizing quality over mere quantity.

In the intricate tapestry of academia, the length of a dissertation is a nuanced consideration, influenced by a myriad of factors ranging from disciplinary norms to the intricacies of research design. In this exploration, we embark on a journey to unravel the complexities surrounding dissertation length, understanding the guiding principles, and offering insights into how aspiring doctoral candidates can strike the delicate balance between depth and brevity.

Join us as we navigate the academic landscape, demystifying the expectations, uncovering the variances across disciplines, and providing practical tips for crafting a dissertation that stands as a testament to scholarly excellence. Whether you’re at the threshold of your doctoral journey or guiding others through its twists and turns, this discourse aims to shed light on the intricacies of dissertation length, empowering you to embark on this intellectual odyssey with confidence and purpose.

Introduction

A. defining the purpose.

  • B. The Dissertation's Role in Academic Knowledge

C. Emphasizing Thorough Research and Original Contributions

A. exploring institutional guidelines, b. specific requirements and length expectations, c. the importance of adherence, a. acknowledging disciplinary differences, b. examples of varied expectations, c. emphasizing disciplinary norms, a. research complexity, b. data collection and analysis, c. literature review, d. methodology, a. emphasizing the importance of balance, b. strategies for maintaining focus and relevance, c. encouraging quality over quantity, a. effective time management, b. techniques for concise writing, c. value of feedback from advisors and peers.

Embarking on a PhD journey is akin to setting sail into uncharted waters of knowledge, with the dissertation standing tall as the crowning achievement. It’s not just a document; it’s a testament to years of intellectual toil, research finesse, and a contribution to the vast expanse of human understanding. But as scholars immerse themselves in the sea of research, a question inevitably surfaces: How long should a Ph.D. dissertation be?

Significance Unveiled

A Ph.D. dissertation is more than a lengthy document; it’s a scholarly masterpiece that not only encapsulates an individual’s intellectual prowess but adds a unique brushstroke to the grand canvas of academia. It’s a beacon of knowledge, guiding future researchers and shaping the trajectory of scholarly discourse. Understanding its significance is the first step toward unlocking the secrets of its length.

Navigating Length: A Delicate Balancing Act

Determining the appropriate length for a Ph.D. dissertation is no mere formality. It’s a delicate dance between providing comprehensive insights and maintaining reader engagement. Striking this balance is crucial, as the length not only influences how the research is perceived but also reflects the researcher’s ability to weave a compelling narrative without unnecessary verbosity.

Factors in the Equation

The length of a dissertation is a dynamic variable influenced by a multitude of factors. From the complexity of the research question to the intricacies of data collection, each element plays a role. It’s a symphony where the depth of the literature review, the intricacy of the methodology, and the nature of the chosen discipline all contribute to the final crescendo of the dissertation length.

Purpose of a PhD Dissertation

At the heart of the Ph.D. journey lies the dissertation, a formidable endeavour that goes beyond being a mere academic requirement. It serves as the cornerstone of a scholar’s intellectual legacy, encapsulating years of research, critical thinking, and a commitment to advancing knowledge in a specific field. The purpose of a Ph.D. dissertation extends far beyond a graduation requirement; it is a scholarly rite of passage that marks one’s entry into the ranks of contributing intellectuals.

B. The Dissertation’s Role in Academic Knowledge

The dissertation, in essence, is a torchbearer of academic knowledge. It doesn’t merely regurgitate existing information but actively contributes to the ongoing conversation within a field. Picture it as a puzzle piece that, when seamlessly integrated, enriches the larger mosaic of human understanding. Its role is not just to summarize what is known but to illuminate uncharted territories, challenging established paradigms and paving the way for new insights.

Example: In the field of environmental science, a Ph.D. dissertation might delve into the impact of climate change on a specific ecosystem, offering novel findings that reshape our understanding of ecological resilience. It becomes a pivotal contribution that informs future research and policy decisions.

Thorough research is the bedrock upon which a meaningful dissertation stands. It involves meticulously exploring existing literature, methodologies, and gaps in knowledge. This isn’t a cursory glance but a deep dive into the scholarly ocean, where each wave of information contributes to the construction of a comprehensive understanding.

Original contributions are the soul of a Ph.D. dissertation. It’s not just about rehashing what’s already known but about introducing something new and transformative. This could be a novel research methodology, a groundbreaking theory, or empirical findings that challenge existing theories.

Example: In the realm of psychology, a Ph.D. dissertation might involve the development of a new therapeutic approach for a specific mental health condition, backed by both a comprehensive review of existing literature and empirical evidence from original studies. This not only adds to the academic discourse but also has tangible implications for clinical practice.

University Guidelines PhD Dissertation Length: Navigating the Academic Framework

In academia, each university sets the stage with its own set of guidelines governing the composition and expectations of a Ph.D. dissertation. These guidelines serve as the rulebook, providing a roadmap for aspiring scholars to traverse the challenging terrain of research and writing. Understanding these guidelines is akin to deciphering the code that unlocks the door to doctoral success.

Dive into the particulars, and you’ll find that universities often outline specific requirements and expectations regarding the length of a dissertation. These may range from prescribed word counts for each section to broader expectations for the overall document. Some institutions might emphasize brevity, while others encourage a more expansive exploration. Unravelling these expectations is not just a bureaucratic formality; it’s a strategic move that ensures your work aligns with the academic standards set by your institution.

Example: Imagine a university that places a strong emphasis on concise and focused dissertations. Here, the guidelines may state a maximum word count for each chapter, encouraging a streamlined and impactful presentation of research findings. Adhering to these specifics ensures that your dissertation not only meets the academic standards but also resonates with the evaluators who appreciate clarity and precision.

While the allure of academic freedom may tempt scholars to chart their own course, adherence to institutional guidelines is paramount. It’s not just a matter of compliance; it’s a strategic decision that aligns your work with the expectations of the academic community. Universities set guidelines with a purpose – to maintain standards, ensure consistency, and facilitate fair evaluation. Ignoring these guidelines can inadvertently hinder the reception of your dissertation, potentially overshadowing the brilliance of your research with concerns about adherence to academic norms.

Disciplinary Variances: Navigating the Length Spectrum

In the vast landscape of academia, one size certainly does not fit all, especially when it comes to the length of Ph.D. dissertations. It’s crucial to acknowledge and appreciate the dynamic nature of disciplinary differences, where each field has its own set of expectations, traditions, and scholarly norms. Understanding this diversity is the key to crafting a dissertation that resonates within the specific academic community to which it belongs.

Let’s take a stroll through different academic landscapes to grasp the breadth of expectations. In the sciences, precision and brevity often reign supreme. A molecular biology dissertation, for instance, may prioritize concise methodology and results chapters, with an emphasis on data interpretation. Contrast this with a dissertation in the humanities, where the richness of language and the depth of literary analysis might lead to a more extensive exploration of concepts.

Example: In engineering, a Ph.D. dissertation might lean towards a succinct presentation of methodologies, experimental results, and their implications for the field. Meanwhile, in the realm of philosophy, a dissertation could be characterized by a more expansive engagement with existing literature and a thorough philosophical exploration of the research question.

The beauty of academia lies in its diversity, but this very diversity requires scholars to be attuned to the norms of their specific discipline. What might be considered a concise and impactful dissertation in one field could be seen as lacking depth in another. Recognizing these norms is not just a matter of fitting in; it’s a strategic decision that ensures your work aligns with the expectations of your academic peers.

Understanding disciplinary norms is like speaking the language of your scholarly community. It’s about knowing when to be succinct and when to elaborate, when to prioritize methodology and when to delve deep into theoretical frameworks.

Factors Influencing PhD Dissertation Length

1. Impact of Research Question Complexity

The complexity of your research question is like the compass guiding the depth and breadth of your dissertation. Intricate inquiries often demand more comprehensive exploration, delving into multiple facets and dimensions. For instance, a research question investigating the genetic determinants of a rare disease may necessitate an extensive review of existing literature, detailed methodologies, and intricate analyses to uncover meaningful insights.

2. Examples of Research Topics

Consider the following examples to illustrate the point:

  • Less Complex: An analysis of consumer behavior in response to a specific marketing strategy might require a detailed but more straightforward exploration.
  • More Complex: On the other hand, a study examining the intersection of artificial intelligence and ethical considerations in healthcare may demand a multifaceted investigation into both technological and ethical dimensions, significantly impacting the length of the dissertation.

1. Influence of Data Nature and Quantity

The nature and amount of data collected cast a profound shadow on dissertation length. A project relying on extensive datasets, intricate statistical analyses, or comprehensive case studies inherently demands a more extended exploration. In contrast, qualitative research might be more concise but equally impactful in unraveling complex phenomena.

2. Role of Statistical Analysis, Case Studies, or Qualitative Research

Consider the following scenarios:

  • Statistical Analysis: A dissertation delving into the economic impact of climate change policies might involve sophisticated statistical models and require an in-depth presentation of results and their implications.
  • Qualitative Research: Conversely, a dissertation employing qualitative interviews to explore the lived experiences of individuals facing a specific social challenge may present findings in a more narrative form.

1. Significance of a Comprehensive Literature Review

A robust literature review acts as the scaffolding for your dissertation, providing the theoretical foundation and context for your research. The broader and more complex the field, the more extensive the literature review. For instance, exploring a niche area within a rapidly evolving field, like emerging technologies, may demand a more thorough literature review to capture the latest developments and debates.

2. Contribution to Overall Length

Consider this:

  • A dissertation in environmental science, investigating the impact of urbanization on biodiversity, might necessitate a detailed exploration of existing literature on ecology, urban planning, and biodiversity conservation.

1. Impact of Detailed Research Methodology

The methodology section is the blueprint of your research, and its level of detail significantly influences the length of your dissertation. A dissertation with a meticulous methodology section is like a well-constructed building, providing a clear roadmap for readers to understand the research process.

2. Need for Clarity and Precision in Research Design

For example:

  • A dissertation in public health aiming to assess the effectiveness of a health intervention might require a detailed explanation of the study design, participant recruitment strategies, and data collection methods to ensure the study’s validity and reliability.

Balancing Depth and Brevity: Crafting a Dissertation Masterpiece

In the symphony of scholarly writing, achieving harmony between depth and brevity is a skill that distinguishes a stellar dissertation. While delving deep into the nuances of your research is essential, presenting it with conciseness ensures that your audience remains engaged. The challenge lies in striking the right balance, where the richness of content is not sacrificed on the altar of brevity.

  • Clear Research Objectives: Begin with well-defined research objectives that serve as the North Star for your dissertation. This clarity guides your writing, preventing unnecessary tangents and ensuring each section contributes directly to your overarching goals. Example: In a dissertation exploring the impact of mindfulness-based interventions on stress reduction, clear objectives would center around understanding the effectiveness of specific mindfulness techniques and their implications for stress management.
  • Thematic Structure: Organize your dissertation thematically, ensuring each chapter has a clear purpose and contributes to building a cohesive narrative. This not only aids readability but also enhances the overall impact of your research. Example: In a literature review, grouping studies thematically—such as by intervention type or outcome measures—provides a structured and focused presentation of existing research, avoiding a scattered and disjointed narrative.
  • Rigorous Editing: Approach your writing with a discerning eye during the editing process. Trim unnecessary words, sentences, or sections that do not directly contribute to the core message of your dissertation. Be ruthless in maintaining relevance. Example: In the methodology section, focus on explaining key decisions and processes, omitting redundant details that do not influence the study’s validity or replicability.
  • Depth of Analysis: Instead of inundating your dissertation with an abundance of superficial analyses, delve deep into a few key points. Thoroughly explore the significance and implications of your findings, providing a nuanced understanding of your research. Example: In a discussion section, rather than covering multiple tangential points, focus on the most critical aspects of your results, analyzing their theoretical and practical implications in detail.
  • Precision in Language: Choose words judiciously to convey your ideas with precision. Aim for clarity without unnecessary embellishments, ensuring that each sentence adds value to your argument. Example: In the introduction, use concise language to clearly articulate the research gap, the significance of the study, and the specific research questions without unnecessary elaboration.
  • Selectivity in Citations: While a comprehensive literature review is vital, selectively cite studies that directly contribute to your research context. Avoid an exhaustive list that overwhelms readers with unnecessary details. Example: In a literature review on educational interventions for students with learning disabilities, selectively cite studies that showcase diverse approaches and methodologies, providing a nuanced understanding of the existing landscape.

As we navigate the delicate equilibrium between depth and brevity, remember that a well-crafted dissertation is not measured by its length but by the impact of its scholarly contributions. Join us as we explore the art of balancing substance with succinctness, ensuring your dissertation stands as a masterpiece in the annals of academic inquiry.

Tips for Managing PhD Dissertation Length: Navigating the Dissertation Writing Process

  • Setting Realistic Milestones: Break down the dissertation-writing process into manageable milestones. Establish realistic timelines for each section, considering the complexity and time required for research, writing, and revisions. Example: Allocate a specific time frame for conducting literature reviews, data analysis, and drafting each chapter. This ensures steady progress and prevents last-minute rushes.
  • Regular Progress Checks: Monitor your progress regularly and adjust your schedule as needed. If a particular section is taking longer than anticipated, evaluate the reasons and recalibrate your timeline accordingly. Example: If data analysis is proving more time-consuming than expected, revisit your research plan and, if necessary, adjust your writing schedule for subsequent chapters.
  • Balancing Research and Writing: Strive for a balance between conducting research and writing. While research is crucial, allocate dedicated time for translating findings into written content to avoid a backlog of information. Example: If you’re conducting experiments, allocate specific writing sessions to summarize and interpret the results, ensuring a continuous flow of progress.

Visit my article on ” How to Manage Research Time” for managing PhD time.

  • Clarity in Expression: Aim for clarity in your writing. Express complex ideas in straightforward language, avoiding unnecessary jargon or convoluted sentences that can inflate the word count without adding substance. Example: Instead of using complex terminology in a theoretical framework, opt for clear and precise language that conveys the theoretical concepts without unnecessary embellishments.
  • Economical Word Choices: Choose words judiciously. Opt for strong, impactful words that convey your message succinctly. Trim redundant phrases and eliminate words that don’t contribute directly to your argument. Example: Instead of saying “due to the fact that,” use the more concise “because” to convey the same meaning with fewer words.
  • Strategic Use of Figures and Tables: Incorporate visuals strategically to convey information efficiently. Figures and tables can often replace lengthy textual explanations, providing a visual representation of data or concepts. Example: Instead of describing a complex set of results in paragraphs, present key findings in a well-designed table, allowing readers to grasp the information at a glance.
  • Early and Regular Feedback: Share drafts of your work with advisors and peers early in the writing process. Their feedback can identify potential issues and guide revisions, preventing the need for extensive rewrites later. Example: Submit a draft of your literature review to your advisor before completing the entire chapter. Early feedback can help refine your approach and ensure you’re on the right track.
  • Objective External Perspectives: Advisors and peers offer valuable external perspectives. They can identify areas where your explanation may be unclear or where additional details may be necessary. Example: If your research methodology is intricate, seek feedback from a peer who is not intimately familiar with your topic. Their questions and comments can reveal where additional clarification is needed for a broader audience.
  • Critical Review for Redundancy: Advisors and peers can help identify redundant sections or unnecessary details. A fresh set of eyes can pinpoint areas where content can be streamlined without compromising the depth of your argument. Example: If two sections of your dissertation cover similar ground, feedback from others can highlight the need to merge or eliminate redundant content, improving the overall flow.

Visit my articles related to PhD , Exciting Careers after PhD .

The journey through the complexities of determining the length of a Ph.D. dissertation reveals a delicate interplay of factors crucial to its scholarly impact. From understanding the significance of this academic endeavour to navigating institutional guidelines and disciplinary variances, the pursuit of balance between depth and brevity emerges as a paramount challenge.

As researchers, we must navigate the intricate landscapes of research complexity, data analysis, literature review, and methodology while maintaining a steadfast commitment to quality over quantity. The tips offered for effective time management, concise writing, and the judicious seeking of feedback underscore the strategic nature of dissertation crafting.

Ultimately, the dissertation is not just an academic requirement but a scholarly legacy—a testament to our intellectual contributions and a beacon guiding future inquiry. In this conclusion, let us recognize that the true measure of a dissertation’s success lies not solely in its length but in its enduring impact on the trajectory of knowledge within our respective fields.

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1. Different approaches to writing PhD dissertations

Many students are looking for PhD help and high-quality writing services and size of the thesis is one of the most difficult questions to answer. When talking about PhD thesis writing, it is important to emphasise the depth of research and comprehensive analysis of all theories and points. This means that size of a dissertation depends on the specific project requirements. For some dissertations that focus heavily on theoretical considerations, the size is likely to be higher. In this case, there is a lot more past literature to be reviewed and more theories to consider. More empirical works rely on a slightly different approach to thesis writing. In this case, the thesis is expected to be a little bit shorter but more empirical. That is, the key value of the thesis comes from empirical findings rather than theoretical review. Therefore, there are different approaches to writing dissertations thereby affecting length of the thesis. However, the minimum length is about 60,000 words, but the key focus is on the depth of research.

2. Subject area and thesis writing

In addition, the length of a dissertation depends on the subject area. For more research-intensive subject areas, there is more information to include in the dissertation. This naturally leads to higher length of the thesis. For areas with much previous literature attention the word count is likely to be larger because of more massive literature review and more opportunities for research. Some new projects with the lack of the academic focus in the past can be shorter. Thesis writing for a social sciences course implies probably larger project size compared to the thesis for science or medicine. Nevertheless, there is no strict answer to this question on the size of a PhD dissertation. There are different factors that come into play and the subject area is one of them.

3. University rules

Another important factor to consider is the university and its PhD dissertation rules and word limits. PhD thesis writing is similar across universities but there are some notable differences. Some universities allow for more strict word limits such as 75,000-80,000 words. Others set higher word limits of 100,000 words or more. Generally, university or course requirements influence size of a PhD thesis. This means that there is no one answer on the size of the thesis paper. Each university has its own standards for PhD thesis writing, so there are significant variations across universities.

The question on how long the PhD dissertation should be is not new. Moreover, each year there are thousands of students who ask exactly the same question. The simple answer can be – “long enough to properly answer the question”. This means that there is no one size that fits all theses. The length of the paper depends on the subject area and university. In addition, depth of research also affects the thesis writing and length of a PhD thesis. Most of theses range from 70,000 to 100,000 words in size. However, each student should consult with his/her faculty on the project size.

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What is a Dissertation? [2025 Guide]

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It’s common for people who are considering a graduate degree to ask, “What is a dissertation?” This term comes up often in discussions of doctoral requirements, but it may not be immediately obvious what’s involved.

What is a Dissertation

Getting the facts about dissertations can help you decide whether this is a project to which you’re ready to commit.

Since a doctoral dissertation can be an integral component of a PhD program, you may want to learn all about it before applying to schools.

Editorial Listing ShortCode:

What Is a Dissertation?

A dissertation is a major project completed by PhD candidates. Through it, you will establish yourself as an expert with the knowledge, critical thinking, and research skills to move your field of study forward.

The dissertation process usually gets into full swing after you complete your doctoral coursework. Before that, though, you may take several classes that will help you get started and teach you what steps to take.

The process of dissertation writing involves several phases. You’ll select a topic, do research, and type up a book-length paper about your findings and conclusions. Afterward, you will present a dissertation defense to a committee of experts who will evaluate your methodology and analyses.

As you work on your doctoral dissertation, you’ll receive the guidance of a faculty advisor. Additional support people may help you refine your strategies and ideas as well. This academic writing project can take many years, but a PhD will be the reward.

Types of Dissertations

It’s common to think of a dissertation as an original research project, but that’s not the only form that this major paper can take.

  • Empirical Dissertation . This type of dissertation involves performing original research. You would design a research study, carry it out, and collect data. Perhaps you would conduct lab studies or speak to test subjects in focus groups. You’d then analyze the data and draw conclusions, which you’d write about in your dissertation.
  • Non-Empirical Dissertation . With this approach to doing a dissertation, you study and analyze others’ research. The goal isn’t to rehash what others in your field have already said but to think critically about it. Your objective might be to identify areas where research is lacking or to suggest new ways to apply current theories.

Before you commit to one path or the other, it’s beneficial to weigh the options carefully with your faculty supervisor. Some universities now offer online doctorate programs without dissertation but have a capstone project for completion. Common programs include on campus DBA degrees or online doctoral programs in education with no dissertation requirement .

How to Write a Dissertation (From Choosing a Topic to Defending It )

Writing a dissertation is a massive undertaking, so it can help to break the process down into steps.

  • Figure out your topic . The topic you choose should address a current hole in the field, captivate your interest, and provide enough material for a robust project. You should be able to distill your topic down into a single sentence, whether a statement or a question.
  • Do background work . It’s necessary to familiarize yourself with the subject and how people in your field currently understand it. This may include running some preliminary tests or reading published studies.
  • Craft your research proposal . Before going any further, it’s necessary to inform your faculty advisor about your plans. You’ll write a multi-page paper that outlines your topic and how you plan to address it. Your supervisor may then accept, adjust, or reject your proposal.
  • Undertake the research . Once you have a plan in place, it will be time to dig into the research portion of your project. What this looks like varies from one person’s dissertation to the next and can depend largely on the field of study. You may need to do lab work, collect data from study participants, review primary source material, or gather secondary commentary on relevant studies.
  • Prepare for the writing process . You may want to read through other people’s dissertations or craft an outline to help guide your process.
  • Draft the body . Once you’re ready to begin, you’ll type up the first draft of your dissertation’s chapters.
  • Get feedback . Throughout the process, it’s helpful to stay in touch with your advisor as well as outside support people. You can ask for their feedback and incorporate it into your work.
  • Prepare the final copy . You’ll edit and proofread your work as well as add an introduction, a conclusion, the appendices, and any additional elements.
  • Finish with the defense . Once you’ve completed each of the above steps, your advisor will determine whether you’re ready to defend your dissertation. You’ll present your research to a panel of experts and field their questions.

If the panel approves of your work, you’ll have successfully completed your dissertation!

Typical Chapters in a Dissertation

Writing a dissertation is different than pulling together a short research paper. Most dissertations are quite long and are broken up into chapters. The format can vary, but the following list provides an overview of common chapter breakdowns:

  • Introduction . Your paper’s first main chapter will introduce the topic.
  • Review of current studies . Known as a literature review, this next chapter or part gives an overview of others’ research related to this topic. It shows where there are gaps in current knowledge and demonstrates the theoretical underpinnings of your project.
  • Research methodology . You will present your approach to collecting data for your research project, and you’ll also discuss your analysis methods.
  • Report of results . You’ll tell readers the things you learned during your study. This is where you’ll present your data, and you may use charts or graphs to visualize your findings.
  • Discussion of results . Your project is about more than simply gathering data. It’s essential to analyze the data as well. In this section, you’ll present your analysis of your findings to help readers learn what the figures mean. You can also share how these findings could advance your field.
  • Conclusion . Finally, you’ll conclude by restating the purpose of your project and summarizing how you have met that objective.

Many dissertations contain other parts as well. Examples include title pages, dedication pages, glossaries, and appendices.

How Long Is a Dissertation for PhD?

Dissertations can vary in length, but they are usually at least 100 pages. Some are 300 pages or longer. Papers between 100 and 200 pages are the most common.

The standard length of a dissertation changes from one field to another. For example, history students often write dissertations that are several hundred pages. Mathematics PhD candidates may have dissertations that are fewer than 100 pages. The school where you earn your doctoral degree may set guidelines for the length of your PhD.

How Many Pages Is a Dissertation?

Many dissertations are a few hundred pages long. You’ll divide those pages up among the different sections of your paper.

The introduction may be 10 or 15 pages long. Your literature review will likely be longer—perhaps around 20 pages. Students may need up to 15 pages to explain your methodology, but the results section should be under 10 pages. Finally, students can use 15 pages or more to share their conclusions.

Dissertation lengths vary among academic disciplines. Your academic supervisor can provide specific guidance for your situation.

What’s a Dissertation Defense?

A dissertation defense is an opportunity to speak with experts from your field about your work. This step comes after you have finished the dissertation research and writing.

The committee will determine whether you have sufficiently answered your original question and contributed valuable research to your field. But you won’t present your defense until your advisor deems you ready, so the experience might not be as nerve-wracking as it sounds.

During the defense, you may give a presentation to the committee. In addition, they can ask you questions, talk to you about your work, and discuss your work among themselves.

What’s the Difference Between a Dissertation vs. Thesis?

In grad school, you’ll hear about dissertations and theses. Both are major projects, but they play different roles.

The above distinctions between a thesis vs. dissertation apply to US schools only. Other countries use different naming conventions.

Writing Your Dissertation

Choosing to enroll in a PhD program and write a dissertation is a big decision. With careful planning and steadfast dedication, you can get this job done.

In the process, you can contribute research and insights to your field and help answer important questions. Plus, you can earn a PhD, a prestigious degree that can take you far in life. PhD programs with dissertations are available from both on-campus and online graduate schools. You can select the format that best suits your schedule and preferences.

If you’re ready to get started, then now is the time to explore accredited universities.

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COMMENTS

  1. How Long is a Dissertation for a PhD? - MyDegreeGuide.com

    Dec 3, 2024 · People often wonder, “How long is a PhD dissertation?” These projects are typically 100 to 250 pages long, though dissertations on complex topics may total more than 400 pages. Writing a dissertation allows you to develop advanced expertise on your chosen research topic.

  2. How long is a Thesis or Dissertation? [the data] PhD, Masters

    Jul 18, 2024 · An undergraduate thesis is likely to be about 20 to 50 pages long. A Master’s thesis is likely to be between 30 and 100 pages in length and a PhD dissertation is likely to be between 50 and 450 pages long. In the table below I highlight the typical length of an undergraduate, master’s, and PhD.

  3. Writing a Dissertation: A Complete Guide - Grammarly

    Jan 16, 2024 · How long should a dissertation introduction be? The unofficial rule is 10 percent of the entire paper , so if your dissertation is 20,000 words, your introduction should be about 2,000 words. Keep in mind this is a rough estimate, as your introduction could vary.

  4. How long is a PhD dissertation? [Data by field] - Academia ...

    Jul 23, 2024 · My PhD dissertation was 256 pages long. It was full of schematics, diagrams, and tables to demonstrate and communicate my findings. I would say that most people’s PhD thesis experience will be closer to mine than Prof George Bernard Danzig’s. Why PhD dissertations are typically so long. PhD dissertations are often over 200 pages long.

  5. How long is a dissertation? - Scribbr

    A master’s dissertation is typically 12,000–50,000 words; A PhD thesis is typically book-length: 70,000–100,000 words; However, none of these are strict guidelines – your word count may be lower or higher than the numbers stated here. Always check the guidelines provided by your university to determine how long your own dissertation ...

  6. How Long Is a PhD Thesis? - DiscoverPhDs

    However, from the analysis of over 100 PhD theses, the average thesis length is between 80,000 and 100,000 words. A further analysis of 1000 PhD thesis shows the average number of pages to be 204. In reality, the actual word count for each PhD thesis will depend on the specific subject and the university it is being hosted by.

  7. How long Should be PhD Dissertation? Stepwise Guide for 2024

    Dec 30, 2023 · The purpose of a Ph.D. dissertation extends far beyond a graduation requirement; it is a scholarly rite of passage that marks one’s entry into the ranks of contributing intellectuals. B. The Dissertation’s Role in Academic Knowledge. The dissertation, in essence, is a torchbearer of academic knowledge.

  8. The Dissertation | The Department of English and Comparative ...

    A typical dissertation runs between 250 and 300 pages, divided into four or five chapters, often with a short conclusion following the final full-scale chapter.There is no set minimum or maximum length, but anything below about 225 pages will likely look insubstantial in comparison to others, while anything over 350 pages may suggest a lack of proportion and control of the topic, and would ...

  9. How Long Should Your PhD Dissertation Be?

    Typically, the standard PhD dissertation is 60,000-80,000 words in length, but there is no one size fits all solution. What is definitely known is that a PhD thesis is significantly larger than an MA dissertation. However, it is important to note that PhD thesis writing is about critical analysis, novelty in research and quality of writing ...

  10. What is a Dissertation? [2025 Guide] - MyDegreeGuide.com

    4 days ago · How Long Is a Dissertation for PhD? Dissertations can vary in length, but they are usually at least 100 pages. Some are 300 pages or longer. Papers between 100 and ...