Unix Timestamp Converter

Convert Unix epoch timestamps (seconds or milliseconds) to human dates and back, in local time and UTC.

Processed on your device Works offline Free, no sign-up
Loading tool…

How to use Unix Timestamp Converter

  1. Paste a timestamp or pick a date.
  2. See it in local time, UTC and ISO 8601.
  3. Copy any format.

Frequently asked questions

Seconds or milliseconds?

Detected automatically: 13-digit numbers are treated as milliseconds.

Is Unix Timestamp Converter free?

Yes. Unix Timestamp Converter is completely free, with no sign-up, no watermark and no usage limits.

Is my data uploaded to a server?

No. Unix Timestamp Converter runs entirely in your browser. Your files and text never leave your device.

Does it work offline?

Yes. After Red Cat Tools has loaded once, this tool keeps working without an internet connection. You can also install Red Cat Tools as an app.