Unix timestamp converter
Convert Unix timestamps in seconds or milliseconds to readable local and UTC dates. Pick a local date and get Unix seconds, milliseconds, and ISO output in your browser.
Enter a timestamp to see the converted date.
This input uses your device time zone: UTC
All conversion runs on your device and is not stored anywhere.
Convert timestamps without guessing the unit
Unix timestamps show up in logs, exported CSV files, API payloads, analytics events, and database rows. A long number is hard to check by eye, so this tool turns it into a readable local time, UTC time, and ISO value in one view.
Shorter values are treated as seconds and longer values as milliseconds, which matches the most common formats used by servers and browser tools. The result also shows which unit was detected, so you can spot mismatches before copying a value into a query or ticket.
The date picker works the other way around. Choose a local date and time, then copy Unix seconds, Unix milliseconds, or ISO text. The conversion happens in the browser and the values are not uploaded or stored.
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