Unix Timestamp Converter
Convert a Unix timestamp into a readable date, or convert any date into a Unix timestamp, in seconds or milliseconds.
Unix timestamp
Or convert from a date
ISO 8601
2026-07-28T12:10:43.000Z
UTC
Tue, 28 Jul 2026 12:10:43 GMT
Local
Tue Jul 28 2026 12:10:43 GMT+0000 (Coordinated Universal Time)
Relative
just now
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How to use this tool
- 1Enter a Unix timestamp, or click "Use current time".
- 2Choose whether it's in seconds or milliseconds.
- 3See it converted to ISO, UTC, local time, and a relative description.
- 4Or pick a date below to convert it into a timestamp instead.
Frequently asked questions
What's the difference between seconds and milliseconds?+
Most Unix systems use seconds; JavaScript's Date.now() uses milliseconds. Pick the unit that matches your source.
Does this handle time zones?+
Yes, it shows both the UTC time and your browser's local time zone.
Unix timestamps — the number of seconds or milliseconds since January 1, 1970 — show up constantly in logs, databases, and API responses, but they're not human-readable at a glance. This tool converts a timestamp into ISO 8601, UTC, local time, and a friendly relative description like "3 hours ago", and works in the other direction too: pick a date and time and get the exact timestamp your code needs, in either seconds or milliseconds.