Unix Timestamp
ISO 8601 Date
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. Runs in your browser — your data never leaves your machine.
Convert timestamps to dates or dates to timestamps. Both directions work instantly as you type.
Toggle between seconds (10-digit) and milliseconds (13-digit) timestamps. Works with both formats used in APIs and databases.
See how long ago or in the future a timestamp is, displayed in a human-friendly relative format.
Enter a Unix timestamp (seconds or milliseconds since the epoch) and the converter instantly displays the corresponding human-readable date and time in both your local timezone and UTC. You can also enter a date to get the Unix timestamp. Toggle between seconds and milliseconds precision as needed.
Unix time (also called epoch time or POSIX time) counts the number of seconds since January 1, 1970 00:00:00 UTC. It is timezone-independent, making it ideal for storing and comparing timestamps across systems. JavaScript uses millisecond precision (13 digits), while most Unix systems and databases use second precision (10 digits).