How to convert Unix time
Paste seconds or milliseconds, then choose Convert. Or pick a local date and convert the other way. Use now fills the current instant.
Frequently asked questions
What is a Unix timestamp?
It counts time from the Unix epoch: 1 January 1970, 00:00:00 UTC. Most APIs use seconds; JavaScript Date.now() uses milliseconds.
Seconds or milliseconds?
13+ digit values are treated as milliseconds. Shorter values are seconds. The result shows both.
Is anything uploaded?
No. The conversion stays in your browser.