🕒 Unix Timestamp Converter
Paste an epoch timestamp to see it in your local time, UTC and ISO 8601, plus how long ago it was. Or pick a date to get the epoch value in seconds and milliseconds. The live clock shows the current timestamp.
Current timestamp
— Local time
—UTC
—ISO 8601
—Relative
—Seconds
—Milliseconds
—🔒 Runs 100% in your browser. Your data never leaves your device.
How to use
- Paste a Unix timestamp and choose seconds or milliseconds.
- Read it as local time, UTC, ISO 8601, or as a relative phrase like ‘3 hours ago’.
- To go the other way, pick a date and time below and click Convert.
FAQ
Seconds or milliseconds — which do I have?
A 10-digit number is seconds; a 13-digit number is milliseconds. JavaScript's Date.now() returns milliseconds, while most databases and APIs use seconds.
What timezone is used?
Local time uses your device's timezone, shown at the bottom of the tool. UTC and ISO 8601 are timezone independent.
What is the year 2038 problem?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038. This tool uses JavaScript numbers, so it handles dates far beyond that.