How to use
- Paste a timestamp in seconds (10 digits), milliseconds (13), microseconds (16) or nanoseconds (19) — the unit is detected automatically.
- Or pick a date and time to get the timestamp in both formats.
- Copy any value with the button next to it.
FAQ
Why does my timestamp have 13 digits?
That’s milliseconds (used by JavaScript and Java). The tool detects them automatically.
What is the Year 2038 problem?
32-bit systems store the timestamp as a signed integer, which overflows on January 19, 2038. Modern 64-bit systems don’t have this problem.