Everyday utilities
Unix timestamp converter
Convert Unix seconds, milliseconds and ISO dates. Choose a time zone when your date does not include an explicit UTC offset.
Good to know
What is a Unix timestamp?+
It is a count of seconds from 1970-01-01 00:00:00 UTC. Many systems instead store milliseconds. A timestamp identifies an instant; the displayed date depends on the time zone.
How are seconds and milliseconds distinguished?+
This tool treats a 13-digit integer as milliseconds, and shorter integers as seconds. For unambiguous input, you can also enter an ISO date with Z or an explicit offset such as +09:00.