Unix timestamp converter
Paste a number from a log, or type a date like 2026-10-25T19:00. Numbers with fewer than 12 digits are treated as seconds.
- Seconds and milliseconds
- Free, no sign-up
Free to use, no account. More everyday tools
How to use it
- Paste a timestamp or a date.
- If you typed a date with no zone, pick the zone it belongs to.
- Read UTC, seconds and milliseconds.
Which numbers are seconds
A value under 100 billion is read as seconds. Longer integers are milliseconds. That split covers current second-based timestamps and the 13-digit values common in JavaScript.
A date without a trailing Z uses the zone selector. A numeric timestamp is always an absolute instant and ignores the zone selector.
Private by design
Privacy
The value stays in this tab and is not uploaded.
Questions
Why is my date a day off?
A bare date is midnight in the zone you picked. Pick UTC if the source meant UTC midnight.
Can I convert a future timestamp?
Yes. The page does not limit the year beyond what the browser's Date object accepts.
Is this local time?
The first line is UTC. Your own zone is not applied to numeric timestamps.