TTidy Utils
Developer

Unix Timestamp Converter

Convert Unix timestamps to dates and readable dates back to epoch values in seconds and milliseconds.

Convert in either direction. Paste an epoch value to get a readable UTC and local date, or edit the readable date to get Unix seconds and milliseconds.
If a timestamp looks too far in the past or future, check whether it is seconds or milliseconds before using it. See the seconds vs milliseconds guide for the 10-digit and 13-digit rule of thumb.
Quick read
UTC2026-07-30T13:22:00.000Z
Local7/30/2026, 1:22:00 PM
Seconds1785417720
Milliseconds1785417720000

How to use Unix Timestamp Converter

Best for

  • Converting Unix epoch values from logs, APIs, databases, and support tickets.
  • Checking whether a timestamp is seconds or milliseconds.
  • Converting a readable local date back to epoch seconds or milliseconds.

Steps

  1. Paste a timestamp or use the current time shortcut.
  2. Choose seconds or milliseconds when converting epoch values.
  3. Review UTC, local time, and derived epoch values before copying.

Notes

  • Timestamp unit ambiguity is common. A 10-digit value is usually seconds; a 13-digit value is usually milliseconds.
  • Timezone display uses your browser's JavaScript Date behavior.

FAQ

What is Unix time?

Unix time counts elapsed seconds from 1970-01-01 00:00:00 UTC.

Does Timestamp Converter handle milliseconds?

Yes. It supports seconds and milliseconds directly and displays derived microsecond and nanosecond values.

How do I convert a date to a Unix timestamp?

Edit the readable local date field. The converter immediately shows the matching Unix timestamp in seconds and milliseconds.