Unix Time Converter

Convert Unix epoch timestamps in seconds, milliseconds, microseconds or nanoseconds to dates and back. Shows UTC, local time, ISO 8601 and relative time.

About this tool

Convert Unix timestamps to human-readable dates and back. The unit (seconds, milliseconds, microseconds or nanoseconds) is detected from the number of digits.

How to use

Paste a timestamp or a date string such as 2026-10-28T12:00:00Z, or click Now.
Check the detected unit.
Copy the local time, UTC, ISO 8601, relative time or epoch value you need.

Frequently asked questions

How is the unit detected?

Up to 11 digits are seconds, up to 14 milliseconds, up to 17 microseconds, and more are nanoseconds.

What is the Unix epoch?

The number of seconds since 1970-01-01 00:00:00 UTC, not counting leap seconds.

Which time zone is used for local time?

Your computer's time zone. Use the time zone converter to see other zones.

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