Timestamp Converter

Convert between Unix timestamps, ISO 8601 and local time, detecting seconds or milliseconds automatically and showing the time zone and relative time.

Runs in your browser: input and output are never sent to the server, and the platform does not store your input.

Input

Not stored

Enter a Unix timestamp, an ISO string, or now for the current time.

Output

Fill in the fields on the left, then run.

How to use

  1. 1Enter a timestamp or an ISO date string.
  2. 2Set the unit manually if the number is misread.
  3. 3The output shows UTC, local time and relative time together.

FAQ

How does it decide seconds or milliseconds?

By digit count: 10 digits is treated as seconds, 13 as milliseconds. You can override it when your source is unusual.

Which time zone is used?

Local time follows your browser's time zone, and UTC is always shown alongside it for comparison.

Can I get the current time?

Yes — type now in the value field to see the current moment in every format.