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Free Unix timestamp converter. Turn epoch seconds into a readable ISO 8601 date and time in UTC. Includes tips for seconds versus milliseconds.
Enter your values and select Calculate to see the result.
A Unix timestamp counts the seconds since 1 January 1970 UTC. Databases, logs and APIs use it because it is compact, sortable and independent of time zone.
Enter a timestamp in seconds to see the matching date and time in ISO 8601 format in UTC. If your number has 13 digits it is in milliseconds, so divide it by 1,000 first. Negative values give dates before 1970.
timestamp seconds → ISO date
Unix timestamps are measured in seconds since 1970 UTC.
It is the number of seconds that have passed since 1 January 1970 at 00:00:00 UTC, also called the Unix epoch.
That is in milliseconds. Divide it by 1,000 before entering it here.
The result is an ISO 8601 date in UTC, shown with a trailing Z.
Yes. Negative values represent dates before 1970.