How to Write an Abstract
Updated November 7, 2026
An abstract is a short summary of your whole paper, usually one paragraph. To write one, state your topic and question, say how you studied it, give your main findings, and end with what they mean. Write it last, keep it under your word limit, and leave out citations.
Readers often decide from the abstract alone whether to read your paper. A clear one helps your professor, your thesis committee, or anyone searching a database.
What goes in an abstract
Most abstracts answer four questions, in this order:
| Part | Question it answers | Typical length |
|---|---|---|
| Purpose | What did you study, and why does it matter? | 1 to 2 sentences |
| Methods | How did you study it? | 1 to 2 sentences |
| Results | What did you find? | 2 to 3 sentences |
| Conclusion | What does it mean? | 1 to 2 sentences |
This kind is called an informative abstract, and it’s the most common in college. Some humanities papers use a descriptive abstract instead. It says what the paper covers but doesn’t give the findings.
Step 1: Finish your paper first
Write the abstract after the rest of your paper is done. Only then do you know exactly what you found and argued.
Before you start, check your assignment or thesis handbook for a word limit. APA style abstracts usually stay under 250 words, and many journals and departments set their own limit.
Step 2: State the purpose
Open with your topic and your research question. Say why it matters in one short sentence. Skip long background. Your introduction does that job.
Example: “Many college students report poor sleep, and phone use at night may be one cause.”
Step 3: Describe your methods
Say briefly how you answered your question. Name the method, the sample, or the texts you studied. Leave out small details.
Example: “We surveyed 312 first-year students about their phone use and sleep over two weeks.”
Step 4: Give your main results
Share your most important findings. Use numbers if you have them, but only the key ones. This part is often the longest.
Example: “Students who used their phones in the hour before bed slept 41 minutes less on average than students who didn’t.”
Step 5: End with what it means
Close with your conclusion and why it matters. You can add one line on what future research or practice should do.
Example: “Colleges could add phone habits to their sleep health programs.”
Step 6: Add keywords if asked
Some assignments and journals want three to five keywords under the abstract. Pick the words someone would search for to find your paper.
Step 7: Cut it to the limit
Read your draft and remove anything that isn’t purpose, methods, results, or conclusion. Cut filler phrases like “this paper will discuss.” Then check the length with a word counter.
A simple template
Fill in the blanks, then rewrite it in your own words:
[Topic] matters because [reason]. This study asks [research question]. We [method] with [sample or texts]. We found that [main result] and [second result]. These findings suggest [meaning], which matters for [who or what].
Example abstract
This example is made up for this guide. The study and numbers aren’t real.
Many college students report poor sleep, and phone use at night may be one cause. This study asks whether phone use in the hour before bed is linked to shorter sleep in first-year students. We surveyed 312 first-year students at one public university about their phone habits and sleep over two weeks. Students who used their phones in the hour before bed slept 41 minutes less on average and reported lower sleep quality than students who didn’t. The link held after we accounted for course load and caffeine. These findings suggest that phone habits play a real part in student sleep. Colleges could add phone habits to their sleep health programs.
That’s 111 words, with each part in its own sentence or two.
Mistakes to avoid
- Copying sentences straight from your introduction
- Adding citations, quotes, or abbreviations you don’t explain
- Promising things the paper doesn’t deliver
- Leaving out your results
Common questions
How long is an abstract?
Usually 150 to 250 words. Your assignment, department, or journal sets the real limit, so check it first.
Does an abstract have citations?
Usually not. An abstract sums up your own work, so you leave out citations unless your field or professor asks for them.
What’s the difference between an abstract and an introduction?
The abstract sums up the whole paper, including results, in one paragraph. The introduction sets up the topic and question and leads into the paper.
Where does the abstract go in APA format?
In an APA paper with an abstract, it goes on its own page after the title page. Write the label “Abstract” in bold and centered at the top. Student papers often skip the abstract unless your professor asks for one.