How to Write a Conclusion

What a conclusion is for

By the time a reader reaches your conclusion, they have seen your thesis and every piece of evidence for it. Repeating those pieces in order tells them nothing new. What they have not yet seen is the argument as a whole: how the parts fit, how much they prove, and why it matters. Providing that view is the conclusion's job.

Many students write summary conclusions because the five-paragraph essay trained them to: restate the three points, then stop. That habit is fine for a short exercise, but in longer work it wastes the one place where you can show a marker that you understand the argument as a whole, not only its parts.

A useful way to think about it: the introduction moves from the general question to your specific claim, and the conclusion moves back out, from your proven claim to its wider meaning. The two should speak to each other. If your introduction opened on a specific case or tension, the conclusion is a natural place to return to it, now seen differently. The guide to writing an essay introduction covers the other end of that arc.

The three moves of a strong conclusion

Most strong conclusions make the same three moves, in this order, whatever the subject or length.

How to write a conclusion in five steps

Write the conclusion after the body, when you know what the essay actually proved. This sequence works for most coursework:

1. 1Reread your thesis and your topic sentences, and note what the argument established and what it left open.
2. 2Write one sentence restating the thesis in new words, as a claim that has now been supported.
3. 3Write two or three sentences showing how the main points relate — which was strongest, how they combine, what they share.
4. 4Choose one final move: an implication, a limit, a further question, a return to your opening, or a call to action.
5. 5Cut anything that introduces new evidence, repeats a body sentence word for word, or claims more than the essay proved.

A conclusion example, weak and strong

Weak version: “In conclusion, this essay has discussed the wolves of Yellowstone. Firstly, it looked at elk. Secondly, it looked at trees. Thirdly, it looked at rivers. Overall, wolves are very important to ecosystems and should be protected everywhere.”

Stronger version: “The return of wolves to Yellowstone changed how many elk the park holds and how they move, a finding supported by several kinds of study. The further claim, that wolves alone restored the park's streams, is harder to sustain, because too much else changed at the same time to credit one cause. That distinction matters beyond one park: a clean story of a single species repairing an ecosystem is persuasive precisely because it is simple, and those weighing future reintroductions need the evidence on its own terms.”

The weak version announces itself, lists topics instead of findings, and ends on a sweeping claim the essay never made. The stronger version restates the thesis as established, explains why the two strands of evidence differ in strength, and widens to a significance the body earned. For how the conclusion fits the whole essay, see essay structure.

How to end an essay: choosing a final move

The last sentence is the one a reader remembers. Pick the final move that suits your argument and the assignment, rather than reaching for the same ending every time. For the Yellowstone essay, the limit-and-question move fits best, because the argument turned on what the evidence could and could not show; a closing sentence might name the long-term comparison of similar streams, with and without wolves nearby, that would settle the point. A call to action such as reintroducing wolves everywhere would overreach, since the essay examined one park. The options:

How to write a conclusion for different assignments

An argumentative essay ends by reaffirming the position and why it outweighs the strongest objection. A literary analysis returns to the text's larger meaning, showing how the features you analyzed shape the reader's experience of the whole work. A philosophy paper states what the argument has established and which objection remains most serious. A research paper summarizes the main findings, acknowledges limitations and suggests future work; the guide to structuring a research paper explains where that sits.

A lab report often folds its conclusion into the discussion, stating whether the results supported the hypothesis and what the main sources of error were; see how to write a lab report. In a timed exam, two or three sentences are enough: restate your answer to the question and give the single most important reason. Markers are looking for a clear final judgment, not polish.

What not to do in a conclusion

These habits are common and easy to fix. Check your ending against each one before you submit:

• Introducing new evidence or a new argument; if it matters, it belongs in the body.
• Summarizing paragraph by paragraph with “firstly, secondly, thirdly”, which repeats rather than synthesizes.
• Copying the thesis word for word from the introduction.
• Overclaiming: concluding that something is true everywhere when the essay examined one case.
• Apologizing or undercutting yourself with lines such as “this is only my opinion”.
• Switching position at the last moment, which leaves the reader unsure what you argued.
• Ending on a famous quotation that speaks for you instead of a sentence of your own.
• Stopping abruptly after the last body paragraph, with no sentence that answers the original question.