Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and vice versa online for free. Supports seconds, milliseconds, and ISO-8601.
Convert between Unix timestamps (seconds and milliseconds) and human-readable calendar dates across all timezones. Includes live epoch counter and timezone breakdowns.
How to use
- View the live ticking Unix epoch in seconds and milliseconds at the top.
- Enter any timestamp to see it parsed into UTC, Local Time, ISO 8601, and relative offset.
- Or use the date-time picker to calculate the exact Unix epoch value.
- Click "Copy" beside any value to grab it instantly.
Frequently asked questions
What is a Unix Timestamp (Epoch)?
The Unix epoch is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (not counting leap seconds).
Does this tool automatically detect seconds versus milliseconds?
Yes. If your input has 10 digits or fewer, it is evaluated as seconds. If it has 13 or more digits, it is parsed as milliseconds.
Which time zones are supported?
All standard IANA time zones are supported via the browser’s native Intl engine, displaying both your system’s local time and UTC simultaneously.