CaptionKit Tools
Subtitle Reading Speed Calculator
Spot captions that may be too fast to read using per-cue character, duration and CPS results.
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Result
Example
Input
1 00:00:01,000 --> 00:00:03,000 This caption has 24 chars
Output
Cue 1 · 10.5 CPS · Comfortable
How to use
- 1Upload a supported file or paste your content.
- 2Choose any options, then start processing.
- 3Review, copy or download the result.
Common errors
Make sure the file is UTF-8 text and every cue has a valid timestamp. Empty or unsupported files cannot be processed.
Frequently asked questions
Are my files uploaded?
No. Local tools process files in your browser and do not send them anywhere.
Does formatting stay intact?
Cue timing and caption text are preserved. Unsupported metadata may be removed during format conversion.