Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Usage examples
Checking a timestamp from an API response
Quickly see what actual date and time a Unix timestamp in a server log or API response corresponds to.
Generating a timestamp for testing
Use the 'Use current time' button to instantly get the timestamp for right now, without typing a date.
Not mixing up seconds and milliseconds
Since some systems use seconds and others milliseconds, switch the unit to compare how the same value is interpreted either way.
Frequently asked questions
Is what I enter sent to a server?
No. All conversion happens entirely in your browser, and what you enter is never sent to a server.
Does it support negative timestamps?
Yes. Negative timestamps, which represent dates before January 1, 1970, are calculated correctly too.
How do I know if a value is in seconds or milliseconds?
It isn't auto-detected — choose the unit yourself using the tabs above. As a rule of thumb, a 10-digit number is usually seconds and a 13-digit number is usually milliseconds.
How is my local time zone determined?
It's shown using whatever time zone your current browser/device is set to, with no extra configuration needed.