Skip to main content

Slide Timer

Plan how long to spend on each slide of your talk or lesson. Free slide timer guidance with pacing rules for conference talks, lessons, and lightning talks.

Use This Tool

Ready Use the controls to begin.

Slide Timer Guide

A slide timer helps keep a presentation moving. Use it to estimate time per slide and avoid spending too long on early sections.

Slide Timer - Tips & Best Practices

  • Divide total time by slide count for a simple pace target.
  • Leave time for transitions and questions.
  • Use a visible presentation timer while rehearsing.

Planning Time per Slide

Divide your total presentation time by the number of slides to get a rough target per slide, then adjust for content density. Title slides and transition slides need 10–20 seconds. Data-heavy or discussion slides may need 3–5 minutes. Write the target time in your speaker notes for each slide, then rehearse with the countdown timer open so you practise to a live constraint rather than an imagined one.

Countdown timer Presentation timers

Slide Timer Rules of Thumb

  • Conference talk (20 min, 20 slides): roughly 1 minute per slide — the Pecha Kucha principle.
  • Class lesson (50 min, 15 slides): allow 2–3 minutes per main content slide.
  • Board presentation (10 min, 8 slides): aim for 90 seconds per slide and keep two minutes for questions.
  • Lightning talk (5 min, 10 slides): exactly 30 seconds per slide — no flex.
  • Always add 10–15% buffer time for audience reactions and unexpected questions.

Rehearsing With a Live Timer

Run a full rehearsal with the presentation timer counting down from your total time limit. Note which slides cause you to overrun, then cut content rather than speaking faster. A speech timer is better for solo rehearsal; use the interval timer to practice per-section time boxes when the presentation has distinct chapters.

Speech timer Interval timer Presentation timers

Frequently Asked Questions

  • How much time should I allow per slide?
    Divide total time by slide count as a baseline - about a minute per slide for a conference talk - then adjust: title slides need seconds, data slides may need 3-5 minutes.
  • How many slides fit in a 20-minute talk?
    Around 15-20 content slides at a comfortable pace. Build in a 10-15 percent buffer for reactions and questions rather than planning to the final second.
  • What is the best way to rehearse slide timing?
    Run a full rehearsal against a live countdown set to your real limit, note which slides cause overruns, and cut content rather than speaking faster.
  • What about auto-advance formats like PechaKucha?
    PechaKucha is 20 slides at exactly 20 seconds each; Ignite is 20 slides at 15 seconds. Rehearse with a timer until your narration lands inside each window.

Use these related pages to complete the task, explore the parent category, or choose a more specific tool.

Presentation timers Speech timer Countdown timer