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Video Length Calculator

The right video length and pace for your platform and goal.

21s

Recommended 15–34s · sweet spot 21s

Sweet spot21s
Cuts~11
Pace30/min
Cut every1.9s
Hook
Value
Payoff / CTA
Hook0–3s

Open a loop or pattern-interrupt in the first frame: promise the payoff before they can scroll.

Value3–17s

Deliver on the hook. One idea, no filler. Every second has to earn the next one.

Payoff / CTA17–21s

Close the loop, then a soft CTA. End on your strongest frame so it loops cleanly.

Why this

Short, fast, loopable clips get the most completions and re-watches on the For You page.

Max reach / virality across platforms

Same goal, three platforms. Here are the targets when you repurpose one shoot.

PlatformRangeSweet spotPace
TikTok15–34s21s30/min
Instagram Reels7–20s12s28/min
YouTube Shorts15–35s25s26/min

These ranges are editorial heuristics from watch-through patterns, not platform-published rules. Test against your own retention graphs.

Frequently asked

What is the ideal length for a TikTok or Reel?
It depends on your goal. For max reach, 7–21 seconds with a tight loop performs best; for watch-through, 20–35 seconds; for education, 45–60 seconds. Use the calculator above to get a target for your platform and goal.
What is cuts-per-minute and why does it matter?
Cuts-per-minute is how often the shot changes. Faster pacing holds attention on short-form feeds. Short-form viewers drop off fastest during slow, static stretches. The calculator suggests both a target cut count and an average seconds-per-cut for your chosen length.
Should every video follow hook → value → payoff?
It is the most reliable short-form structure: a hook in the first ~3 seconds, the value in the middle, and a payoff or CTA at the end. The timeline above scales those beats to your length and tells you what to do in each.
Does video length affect the algorithm?
Indirectly. Platforms optimize for watch time and completion rate, not length itself. A longer video that holds attention beats a short one people skip, and a short one finished and re-watched beats a long one abandoned. Pick the length you can keep compelling end to end.
Is shorter always better?
No. Shorter helps completion rate, but if your payoff needs room, cutting it too tight kills the value. Match length to the goal: trim for reach, give education and storytelling the seconds they need, and cut dead air either way.
How long should a YouTube Short be?
Shorts can run up to 3 minutes, but for most brand content 25–50 seconds is the sweet spot: long enough to deliver watch time YouTube rewards, short enough to keep momentum. Switch the platform selector to YouTube Shorts for a goal-specific target.

Bevyl turns your raw footage into a finished, on-brand cut in this exact shape: hook, value, payoff.

Try Bevyl free

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Engagement Rate

Enter your numbers to see your engagement rate and how it compares by platform.

Terms of Engagement

What TikTok, Reels and Shorts each call the same metric: watch time, retention, hook rate.

ScriptSkeletons

Beat-by-beat script structures by format: UGC review, product demo, founder story.

Social Media Sizes

Every short-form video and image size: TikTok, Reels, Stories and Shorts, with safe zones.

Aspect Ratio Calculator

Simplify dimensions, scale an image or video to a new width, and match the ratio to platform sizes.

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