Unix Timestamp Converter

Paste a timestamp to convert it to a readable date, or pick a date to get its timestamp. Works with both seconds and milliseconds. Conversion happens locally — nothing is uploaded.

Unix timestamp
Human-readable date
Pick a date & time instead
Resulting timestamp

Common questions

What is a Unix timestamp?

A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC, also called the Unix epoch.

Does this tool support milliseconds?

Yes. The tool auto-detects whether a pasted number is in seconds or milliseconds based on its length, and you can also convert to either explicitly.

Does this upload my data anywhere?

No. All conversion happens locally in your browser using JavaScript's built-in Date object. Nothing is sent to a server.