SEED DECK3m 44saverage time an investor spends on a seed pitch deck[1]READ TO END58%of pitch decks are read to the last slide[1]PRE-SEED<3.5 minaverage investor time on a pre-seed deck[2]PROBLEM SLIDE92%of successful pre-seed decks explain the problem[2]TEAM SLIDE93%of pre-seed decks include a team slide[2]TRACTION+80%more investor time on traction for startups that did not raise[1]
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How many slides for a 5, 10, 20 or 30-minute presentation?

Short answer from DeckDash: how many slides you need for a presentation depends on the time and the type of talk: a common rule of thumb is about one slide per minute, so a 10-minute presentation needs roughly 8 to 12 slides. This guide gives ranges for 5, 10, 20 and 30-minute talks, and when to break the rule.

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Step by step

  1. Start from your time limit. Take your minutes and plan roughly one slide per minute as a starting point. Leave a minute or two for questions inside the limit.
  2. Adjust for the type of talk. Visual, story-led talks move faster (more slides, less text each). Data-heavy reviews move slower (fewer slides, more time per chart).
  3. Count ideas, not slides. List the ideas you need to land. One idea per slide; if you have 15 ideas for 5 minutes, cut ideas, not font sizes.
  4. Move detail to an appendix. Backup charts and tables go after your final slide, so they don't count against your time but are there for questions.
  5. Rehearse once with a timer. The only reliable count is the one you measure. If you run over, cut whole slides rather than talking faster.

Rules of thumb by length

Talk lengthTypical slidesNotes
5 minutes5–7Lightning talks and quick updates. One idea each.
10 minutes8–12Pitch meetings often go here; keep detail for questions.
20 minutes15–25 (visual talks up to ~40)Conference slots. Fast visual styles use more slides.
30 minutes20–30Quarterly reviews, workshops. Use section-divider slides.
50-minute workshop20–30Add a recap slide every 10–15 minutes.

These are rules of thumb, not research findings. Your audience, organiser's guidance comes first.

Questions

Is the 10/20/30 rule still useful?

Guy Kawasaki's 10/20/30 rule (10 slides, 20 minutes, 30-point font) is a well-known guideline for pitches. It's a sensible ceiling, not a law.

Do title and thank-you slides count?

Count them, but they take seconds. What matters is the number of content slides you'll actually talk through.

Short on time? DeckDash turns your notes into a finished, editable deck in 24–48 hours, from $20. How to order.

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