Unix timestamp converter
Paste a Unix timestamp in seconds or milliseconds, or a date, and see it in your time zone, in UTC and as ISO 8601.
Runs in your browser. Your files are never uploaded or stored.
Seconds, milliseconds or a date like 2026-05-01T09:30:00Z.
| Unix (seconds) | ||
|---|---|---|
| Milliseconds | ||
| ISO 8601 | ||
| Your time zone | ||
| UTC | ||
| Relative |
Something not working, or missing an option?
How to use Unix timestamp converter
- Paste a timestamp or date, or pick one.
- Read it in every format at once.
- Copy the one you need.
Questions
Seconds or milliseconds?
Both work: 10-digit numbers are read as seconds and 13-digit numbers as milliseconds, as most systems use.
Are my files uploaded?
No. The tool runs inside your browser, and the page is blocked from sending data anywhere. You can check by turning off your internet connection: it keeps working.
Open-source parts
This tool uses only features built into your browser: no third-party code.