Paste a script and see how long it takes to read out loud. Pick a pace, check if it fits 15, 30, 60 or 90 seconds, and trim before you film.
Free and unlimited. Calculations run in your browser.
How It Works
Fill in the fields — every one has a sensible default.
The result updates as you type.
Change one input at a time to see what moves the result most.
The Script Length Calculator is a free online tool from ShortsHero: words to seconds before you film. It works instantly in your browser. Free, with no account.
Words to seconds before you film.
Why Use This Tool
Updates as you type. No button, no waiting.
Every assumption is shown and editable, so you can plug in your own numbers.
Nothing you enter is stored or sent anywhere.
It is an estimate built from published platform averages. Your real numbers depend on audience country, niche and season — replace the defaults with your own analytics for a closer figure.
Yes. It runs in your browser and nothing you type is stored.
ShortsHero turns long videos into short vertical clips with AI moment detection, face tracking and animated captions — and has free tools for subtitles, transcripts and video formats.
The same transcription powers ShortsHero's clip maker: it finds the strongest moments, reframes them to vertical and adds word-by-word captions in 36 styles.
Try the clip maker freeFree to start · No credit card required
Keep Going
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