Convert Unix timestamps and readable dates
Use this Unix timestamp converter when you need to turn a machine timestamp into a human-readable date, or create a Unix timestamp from a date and time. It runs in the current browser tab, so you can check a value without sending it to a server.
Seconds or milliseconds?
A 10-digit Unix timestamp usually represents seconds. A 13-digit value usually represents milliseconds. Checking the unit first avoids dates that are off by a factor of 1,000.
How to convert a timestamp
- Paste the timestamp or choose a date and time.
- Confirm whether the timestamp is in seconds or milliseconds.
- Review the resulting date and timezone before copying it into a log, report, or API request.
Read the timestamp conversion guide for a practical workflow, or use the seconds vs milliseconds check when the unit is unclear.
Does timezone change a Unix timestamp?
The Unix timestamp represents one instant in time. Timezone affects how that instant is displayed as a local date and clock time. Always record the timezone used when comparing a displayed date with a timestamp.