Unix Timestamp Converter
Convert Unix seconds or milliseconds to a date, or an ISO date to a timestamp.
Your converted timestamp will appear here.
How it works
Unix time counts from January 1, 1970 at 00:00:00 UTC. Choose seconds or milliseconds explicitly, then convert. ISO date inputs require Z or a numeric UTC offset.
Example
Convert 1790371200 with Seconds selected.
2026-09-25T21:20:00.000Z.
Common questions
Should I choose seconds or milliseconds?
Use the unit specified by the system that produced your timestamp. A millisecond value is 1,000 times the equivalent value in seconds.