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Unix Timestamp Investigator
Paste a timestamp and auto-detect whether it's seconds, ms, µs or ns, then decode the date.
Free · No sign-up · Updated August 2026
Detected unit: seconds · just now
| Local time | Sunday, September 27, 2026 at 6:09:10 PM UTC |
| UTC / ISO 8601 | 2026-09-27T18:09:10.000Z |
| UTC string | Sun, 27 Sep 2026 18:09:10 GMT |
| In seconds | 1790532550 |
| In milliseconds | 1790532550000 |
Paste a raw timestamp and it figures out whether it's in seconds, milliseconds, microseconds or nanoseconds, then decodes the date. Handy when logs and APIs disagree on precision.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
How does it detect the unit?＋
By the number's magnitude — it decides whether the timestamp is in seconds, milliseconds, microseconds or nanoseconds, then decodes the date.
Why does this matter?＋
APIs and logs disagree on precision. JavaScript uses milliseconds while many systems use seconds — mixing them is off by 1000×.