Timestamp converter
Converts Unix seconds to a UTC date or a zoned ISO date to Unix seconds.
Processed on this device. The files are not sent to a server.
How to use this tool
- Choose the conversion direction.
- Enter Unix seconds or an ISO date with time zone.
- Review and copy the result.
What you should know
Date output uses UTC. The Unix entry is in seconds, not milliseconds. The calendar must be valid; Leap seconds are not allowed.
Why does the time change with respect to my watch?
UTC is a common area for comparing instants. The same moment may have another time in your local area.