Convert Unix timestamps to human-readable date and time, or convert a date to a Unix timestamp. Supports seconds and milliseconds.
seconds since epoch
| Unix (seconds) | 1774762150 |
| Unix (milliseconds) | 1774762150000 |
| ISO 8601 | 2026-03-29T05:29:10.000Z |
| UTC | Sun, 29 Mar 2026 05:29:10 GMT |
| Local time | 3/29/2026, 5:29:10 AM |
| Relative (sec) | -1s (past) |
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Unix time = seconds since 1970-01-01 UTC
ms timestamp = Unix × 1000
Current: 1774762150
A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the Unix Epoch). It's the universal standard for representing time in computing.
It's constantly increasing. Use this calculator to see the current timestamp or check Date.now() in JavaScript.
Most Unix timestamps are in seconds. JavaScript uses milliseconds (multiply seconds × 1000). Common mistake: if your timestamp is ~13 digits, it's milliseconds.
That's January 19, 2038 — the 'Year 2038 problem' where 32-bit systems overflow. 64-bit systems handle dates far beyond this.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.