Unix Timestamp Converter

Convert between a Unix timestamp and a human-readable date/time — edit either side and the other updates to match.

Unix timestamp Unit

Time zone Date & time (in the zone above)

How to use this tool

Type a Unix timestamp, or set the date/time directly — both stay in sync. The breakdown below shows the same instant in several common formats.

Seconds vs. milliseconds The "true" Unix timestamp is in whole seconds since Jan 1, 1970 UTC. JavaScript's own Date.now() and most JS APIs use milliseconds instead - the unit toggle covers both without needing to multiply/divide by 1000 yourself.
Time zone Only affects how the date/time field and "Local" format are displayed - the underlying instant (and the timestamp itself) is the same regardless of time zone.