polyshA little tool. A clearer workflow.
Free Subtitle Delay Calculator
Use the free subtitle delay calculator with SRT or WebVTT captions. Your files stay in your browser.
✓ Runs in your browser✓ No uploads✓ No account required
Loading your browser tool…
How to use Subtitle Delay Calculator
- Enter the expected and observed timestamps for the same caption.
- Calculate the delay to see the offset needed to align the observed caption.
Know your result
Positive delay means the observed caption is late. Use Subtitle Time Shifter to apply the recommended offset to a complete file.
Files and pasted content are processed on your device. Polysh does not receive your input through these tools.