ToolQuarters

Unix Timestamp Converter

Convert a Unix timestamp (epoch) into a readable UTC, local and ISO date — or turn a date back into seconds and milliseconds. Seconds and milliseconds are detected automatically.

Runs in your browser — your files never leave your device

How to use Unix Timestamp Converter

  1. 1Paste a Unix timestamp to see the date in UTC, local time and ISO 8601.
  2. 2Or pick a date and time to get its Unix value in seconds and milliseconds.
  3. 3Use the “Use current time” button to start from now.

Frequently asked questions

Does it handle both seconds and milliseconds?

Yes. Large values are treated as milliseconds and smaller values as seconds, automatically.

What is a Unix timestamp?

It's the number of seconds (or milliseconds) since 1 January 1970 UTC, a common way to store time in software.

Is my data sent anywhere?

No. All conversion happens in your browser.