Free browser utility
Subtitle CPS Calculator
Set a CPS limit and find captions that may disappear before viewers can comfortably read them.
✓ Local processing✓ No registration✓ No file upload
Loading tool…
Before
60 characters in a 2-second cue
→
After
30 CPS — above the selected limit
How to use Subtitle CPS Calculator
- Paste text or select local files in the tool area.
- Choose any options that match the source data.
- Run the conversion or repair and review the preview.
- Copy the result or download the generated file.
Privacy and local processing
This project performs processing, document generation or calculations in your browser. The page does not include an upload endpoint, analytics script or remote processing API call. Avoid pasting sensitive data into websites you do not control.
What this tool includes
- characters-per-second analysis
- ignore spaces or tags
- cue-level warnings
Common uses
- streaming subtitle review
- social caption pacing
- localization QA
Practical tips
- Use the same counting convention across the whole project.
Frequently asked questions
Does Subtitle CPS Calculator upload my data?
No. The included tool runs locally in your browser and does not send the entered content to a processing server.
Can I use the result commercially?
The generated result is based on your own input. Review it for accuracy and any third-party rights before commercial use.