Convert Unix timestamps
Epoch seconds/milliseconds to dates in any time zone, and back.
Runs on your device — never uploaded
How to convert Unix timestamps
- Paste a timestamp
Seconds or milliseconds are detected automatically.
- Read the date
Local, UTC and ISO 8601 forms, plus relative time.
- Or go the other way
Pick a date and time to get its epoch value.
Frequently asked questions
Seconds or milliseconds?
Unix time is seconds since 1970-01-01 UTC; JavaScript and many APIs use milliseconds. Values over 10 digits are treated as milliseconds.
What happens in 2038?
32-bit signed timestamps overflow on 19 January 2038; 64-bit systems are unaffected.
Is anything uploaded?
No.