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Unix Timestamp Converter

Convert Unix timestamps to dates and dates to timestamps — in seconds or milliseconds.

Timestamp to date

Local time: —
UTC time: —
ISO string: —

Date to timestamp

Seconds: —
Milliseconds: —

How to use the Unix Timestamp Converter

  1. Paste a Unix timestamp or pick a date.
  2. The tool converts between seconds, milliseconds and readable dates.
  3. Copy the value you need.

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Frequently Asked Questions

Common questions about the free online unix timestamp converter.

A Unix timestamp is the number of seconds since 1 January 1970 00:00:00 UTC (the epoch).
Enter the timestamp and the date appears instantly.
Pick a date and the tool shows the Unix timestamp.
Yes. Select either unit and the matching field updates automatically.
The tool shows your local time and UTC side by side, so you can compare them.
No. Everything runs locally in your browser, so your data never leaves your device.
Click the Now button to insert the current time, then convert it as usual.
Some 32-bit systems cannot store timestamps beyond January 2038.
Yes. The tool is fully responsive and works in any modern browser on desktop, tablet and phone.

Last updated: October 10, 2026