Timestamp Converter

Convert Unix timestamps to dates and back. Supports seconds, milliseconds, ISO 8601, and multiple timezones.

Convert Unix Timestamps

Timezone

live

Unix (seconds)1772829753

Unix (milliseconds)1772829753883

ISO 86012026-03-06T20:42:33.883Z

Local (UTC)06/03/2026 20:42:33

Relative0 seconds ago

Timestamp to Date

Date to Timestamp

Seconds vs milliseconds

Unix time is traditionally in seconds. JavaScript uses milliseconds. We auto-detect: values over 10 digits are treated as milliseconds.

What is Unix time?

The number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (the Unix epoch), not counting leap seconds.

☕

Find this useful?

These tools are free and ad-free. Support the project!