Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Works with seconds and milliseconds, in UTC and your local time.
How it works
- 1
Choose the direction
Timestamp to date, or date to timestamp.
- 2
Enter the value
A number such as 1700000000, or an ISO date.
- 3
Read the result
Seconds, milliseconds, ISO 8601 UTC and local time.
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Frequently asked questions
10-digit values are seconds and 13-digit values are milliseconds; the tool detects which.
What is a Unix timestamp?
A Unix timestamp counts the seconds since 1 January 1970 00:00:00 UTC, known as the epoch. It is how servers, databases and APIs store points in time without worrying about time zones.
Some systems use milliseconds instead — 13 digits rather than 10. The converter detects both, and shows the result in ISO 8601 UTC and in your local time zone.