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Unix Timestamp Converter
Databases and logs store time as seconds since 1 January 1970. This converter turns that number into a date you can read, and turns a date back into a timestamp, showing UTC and local side by side.
How to use it
- Paste a timestamp, or pick a date and time.
- Millisecond values with 13 digits are detected and handled automatically.
- Read the UTC form, your local form and how long ago it was.
Examples
- 1700000000 → 14 November 2023, 22:13:20 UTC.
- 0 → the epoch itself, 1 January 1970 at midnight UTC.
- JavaScript's Date.now() returns milliseconds; paste all 13 digits and it still works.
Questions people ask
Seconds or milliseconds?
Unix time is defined in seconds, and most databases and APIs use ten-digit values. JavaScript and some log formats use milliseconds, which are thirteen digits. This tool detects the length and converts either one.
What is the 2038 problem?
Systems that store the timestamp in a signed 32-bit integer run out of room on 19 January 2038 and wrap to a negative number. Modern 64-bit systems are unaffected, but old embedded software may still need attention.
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Updated: 2026-08-07