Unix Timestamp Converter
Convert epoch timestamps to human-readable dates and back again. Handles seconds and milliseconds, and shows UTC, local time and ISO 8601.
Timestamp → date
Result
Date → timestamp
Enter a timestamp or pick a date to begin.
How to use the Timestamp Converter
Paste a Unix timestamp and leave the unit on auto-detect, or choose seconds/milliseconds.
Click Convert to date to see UTC, local, ISO 8601 and relative time.
For the reverse, pick a date and time and convert it into an epoch timestamp.
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since 1 January 1970 UTC, ignoring leap seconds. It is a timezone-independent way to store a point in time.
How does the tool know seconds from milliseconds?
In automatic mode, values with 13 or more digits are treated as milliseconds and shorter values as seconds. You can also pick the unit explicitly.
Why does the same timestamp show two different times?
UTC is the same worldwide, while local time depends on your device's timezone offset. Both describe the same instant.