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Unix Timestamp Converter

The Unix Timestamp Converter turns a timestamp into a date, or a date into epoch seconds or milliseconds. It works out whether a number is in seconds, milliseconds, microseconds or nanoseconds and shows the result in UTC and the timezone you pick.

Step by step

  1. Enter a timestamp such as 1700000000, a date such as 2026-09-17 14:30, or now.
  2. Pick a timezone. Dates typed without an offset are read as local time in that zone.
  3. Open More options if auto-detection picks the wrong unit.
  4. Copy the result or share a link that reopens the same conversion.

Example

1700000000
Unix timestamp (s)    1700000000
Unix timestamp (ms)   1700000000000
ISO 8601 (UTC)        2023-11-14T22:13:20.000Z
RFC 2822 (UTC)        Tue, 14 Nov 2023 22:13:20 +0000

How the unit is detected

DigitsRead as
Up to 11Seconds
12 to 14Milliseconds
15 to 17Microseconds
18 or moreNanoseconds
Seconds or milliseconds?

JavaScript’s Date.now() returns milliseconds, while PHP’s time() and most databases use seconds. Mixing them puts dates in 1970 or far in the future. In WordPress, wp_date( 'Y-m-d H:i', $timestamp ) formats a timestamp in the site’s timezone.