More free calculator tools
Same quality bar. Still free. Still no upload.
Part of free Instagram tools, free TikTok tools, free YouTube tools, free LinkedIn tools and free X tools.
Your files never leave your device
Free to use, with no account, no usage limit and no watermark, because the work runs on your device rather than on our servers.
This is not a promise about how carefully we handle your upload. There is no upload. The file you choose is read into memory by your own browser, processed there, and handed back as a download — the tool has no server component and makes no network request with your data.
- Nothing is stored. We never receive the file, so there is no copy to retain, no retention period to disclose, and nothing to delete on request.
- Nothing is transmitted. No upload endpoint, no analytics payload carrying file contents, no third-party processor.
- You can verify it. Load this page, disconnect from the internet, and use the tool. It still works, because everything it needs is already on your machine.
- Nothing persists after you close the tab. Files are held in page memory only — not in local storage, not in a cache, not in a database.
A note on wording, because it matters: we do not describe these tools as “encrypted.” Encryption protects data that travels to somebody else's computer. Your file does not travel, so there is nothing to encrypt and nothing to intercept — which is a stronger guarantee than encryption, not a weaker one. The page itself is served over HTTPS like the rest of the site.
This makes the tools safe for material you are contractually barred from uploading to third-party services — client footage under NDA, unreleased campaign assets, anything covered by a confidentiality clause.
How it works
1. Paste the script
Drop in the copy you plan to read or caption. Word count is the only input that matters here.
2. Set a speaking pace
Pick a WPM that matches the read: slower for explainers, faster for ads. 150 wpm is a common VO target.
3. Read the fit
See total duration and suggested clip counts for short-form lengths. Adjust the script until the timing fits the format.
Questions
What does a free script timing estimator do?
It converts word count into an estimated spoken duration at a chosen words-per-minute pace, so you know whether a voiceover or caption script fits an 8s, 15s, 30s or 60s cut before you record.
Why is the duration different from my recording?
WPM is an average. Pauses, names, numbers and a breath before a line all stretch real speech. 150 wpm is a typical voiceover target, not a prediction of a specific speaker. If you already have a recording, time that rather than the script.
What is suggested clip count?
Duration divided by 8, 15, 30 or 60 seconds, rounded up. It does not know where a thought ends, so it is a fit check against a format, not a cut list. Cut on meaning after you know the script is in the right ballpark.
Does this upload my script?
No. Timing is plain arithmetic in your browser. The text never leaves your device.
Related tools
Stay in the same job cluster. Free tools stay on-device; paid tools are labelled as such.
These rearrange files. Versely makes new ones.
Everything on this page works on a file you already have, which is why it costs nothing. Generating something that did not exist (video from a prompt, a voice, a score) runs a model, and that costs credits.