Free Tool
Subtitle Time Shift
Shift all subtitle timestamps forward or backward by any amount. Fix out-of-sync subtitles in seconds.
Drop your file here
or
Supports .srt, .vtt, .txt files
hours
minutes
Add SRT files (2+)
seconds
Result
How It Works
Upload Subtitles
Drop your SRT or VTT file with out-of-sync timestamps.
Set Shift Amount
Choose forward or backward and enter the number of seconds to shift.
Download Fixed File
All timestamps are adjusted — download your synced subtitle file.
Frequently Asked Questions
What does time shift do to my subtitles?
It adds or subtracts a fixed number of seconds from every timestamp in your subtitle file.
Does it work with both SRT and VTT?
Yes. The tool auto-detects the format and outputs in the same format.
Can I shift by fractions of a second?
Yes. Enter a decimal value like 0.5 for half a second.
What happens if shifting makes a timestamp negative?
Timestamps are clamped to 00:00:00,000 — they will never go below zero.
Will this fix gradually drifting subtitles?
Time shift applies a constant offset. If subtitles drift over time, you may need a speed adjustment tool.
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