Presentation with an 18 minute limit

First, clarify what the 18-minute limit includes

Check the event instructions or invitation: is 18 minutes for speaking only, or does it include questions and answers and transitions? If this is not specified, ask the organizer. If you do not receive an answer, try to clarify your assumption before the presentation; if you can set the timing yourself, plan separate allowances for speaking and questions and answers. No single time allocation works for every event.

Salisbury University Library Guides associate TED with short talks of 18 minutes or less; this does not mean every presentation must be exactly 18 minutes or that every event follows the same rule (Early and Elementary Education: Find Videos; ELED 202: Technology in Education: Find Videos). So first, confirm your own event’s time limit. If the limit is firm, you may want to leave a small buffer in your rehearsal.

Choose your main message and scope

Write one sentence describing what you want the audience to understand or remember at the end of the presentation. Then identify up to three main points that support this message. Check how each point connects to the main message; consider removing details with a weak connection or moving them to supplementary material. This is a practical planning choice that focuses on developing a limited idea clearly, rather than claiming to cover the entire topic.

As you prepare your outline, briefly answer these questions: Who is the audience? How familiar are they with the topic? What does the presentation need to accomplish? What examples or verified information do you have? Do not assume details you do not know. If you cannot check the source or accuracy of a claim, verify it, qualify it clearly, or leave it out rather than presenting it as certain.

Plan the minutes by section

The schedule below is an example for an 18-minute talk, excluding questions and answers; it is not a required or universal formula. Adjust the timing to suit your topic and audience.

• 0:00–1:30: Open with a question, problem, or brief example; explain why the topic is being discussed.
• 1:30–3:00: Provide the necessary context, state the main message, and briefly preview the presentation.
• 3:00–7:00: Explain the first main point; include an example or information needed to understand it.
• 7:00–11:00: Discuss the second point; where appropriate, show how it connects to or differs from the previous point.
• 11:00–15:00: Address the third point, an application, or a possible outcome.
• 15:00–17:00: Bring the points together and restate the main message.
• 17:00–18:00: Close briefly and clearly. If questions and answers are included in this time, shorten the speaking sections accordingly.

Hypothetical example: improving remote meetings

This example is a hypothetical scenario created only to demonstrate the planning method; it makes no factual claims about any company, people, or outcomes. Suppose the topic is “making remote meetings more effective.” The main message could be: “Clarifying the meeting’s purpose, necessary participants, and expected decision in advance may help the meeting stay focused.”

• 0:00–1:30: Open with a hypothetical meeting that ends without a clear decision.
• 1:30–3:00: Explain the problem and the main message.
• 3:00–7:00: Use an example to show the idea of writing down the meeting’s purpose in advance.
• 7:00–11:00: Discuss identifying the necessary participants and the person responsible for the decision.
• 11:00–15:00: Show how to set an agenda and record decisions at the end of the meeting.
• 15:00–17:00: Bring the three steps together into one actionable process.
• 17:00–18:00: Suggest one step the audience can try at its next meeting.

Using this sequence, draft slides for the opening, context, three main points, and conclusion. Ask whether each slide has a clear purpose; do not turn the slides into a complete transcript. Rather than committing to a fixed number of slides, decide based on the ideas you need to present and the visuals required. For longer presentations, see the guide to assessing how many slides to use in a thirty-minute presentation.

Edit the script and examples to fit the time

Instead of writing every sentence in your first draft, note the section’s main idea and how you will transition to the next section. Then deliver the script or notes aloud. Word count alone does not determine presentation length; your delivery, pauses, and time spent explaining visuals can all affect the result. For an approximate timing plan based on word count, see the guide to planning presentation speaking pace by word count; make your final decision based on your own rehearsal time.

If your rehearsal runs over the planned time, review repetitions, side details, or examples that contribute little to the main message instead of speaking faster. If it runs too short, consider adding an explanatory example to help the audience understand, rather than repeating the same idea. Check that every addition supports the main message.

Rehearsal and final review

Rehearse the presentation from beginning to end with a timer, including transitions and explanations of visuals. Noting when each section ends can help you identify which part is running long. Do not check only the final slide: also check, for example, whether the second main point starts within its planned time range. If you include questions or demonstrations during rehearsal, account for their effect on the timing separately.

For common situations, you can try these adjustments:

• If the introduction runs long: Limit the background to what the audience needs to understand the main question.
• If a section exceeds its allotted time: Keep the main claim and the most useful example for explaining it, and remove side details.
• If the sections feel disconnected: Add a brief sentence at the end of a section to connect it to the next one.
• If there is no time left for the conclusion: Keep the conclusion as a separate section; summarize the main idea and suggested next step instead of adding new information.
• If rehearsal times vary: Keep the sequence the same and note any pauses, questions, or demonstrations that affect the timing.

Final checklist

• I confirmed whether the 18 minutes covers speaking only or the total time, including questions and answers.
• The main message is expressed in one clear sentence.
• Each section has a purpose and an approximate end time.
• I checked the examples and factual claims and identified hypothetical elements.
• I set aside time for the opening and conclusion.
• I rehearsed the presentation aloud and adjusted it to fit the time.
• I checked that the final slide aligns with the main message.

How many slides should an eighteen-minute presentation have?

Rather than settling on one correct number, review the ideas you need to present and the visuals required to explain them. Check how each slide contributes to the presentation; do not add slides just to fill the time.

What should I do if the eighteen minutes includes questions and answers?

First, confirm the event format. If the time limit includes questions and answers, plan a shorter speaking section and set aside time specifically for questions. If the number or length of questions is unknown, consider aiming to finish your rehearsal earlier.