How to use Unix timestamp converter
- Paste a timestamp (seconds or milliseconds are detected automatically).
- Or pick a date and time below.
- Copy the value you need.
Questions
What is a Unix timestamp?
The number of seconds since 00:00:00 UTC on 1 January 1970, not counting leap seconds. It's the same everywhere in the world at a given moment.
Seconds or milliseconds?
Unix tools usually use seconds (10 digits today). JavaScript and many APIs use milliseconds (13 digits). The converter detects which you pasted.
What is the year 2038 problem?
Systems that store the timestamp as a signed 32-bit number overflow on 19 January 2038. Modern systems use 64-bit values and aren't affected.
Last updated 13 November 2026.