Digital & Text Tools

How to Use the Timestamp Converter

Enter a Unix timestamp to see its equivalent calendar date and time, or pick a date and time to see its Unix timestamp — both directions update instantly, and a running current timestamp at the top updates live for quick reference.

The tool automatically detects whether you've entered seconds or milliseconds, based on how many digits you type.

Converting a timestamp to a readable date

As covered in the what-a-timestamp-is guide, the result is shown in UTC — if the date looks different from what you expected based on your local clock, that's expected, since the timestamp itself carries no timezone and is being displayed in a fixed reference zone.

Converting a date to a timestamp

Pick a date and time using your local timezone in the date field, and the tool converts it into the equivalent Unix timestamp — useful for constructing a specific timestamp value to use in code, a database query, or an API call.

Frequently asked questions

How does the tool know if I entered seconds or milliseconds?

It checks the number of digits — a standard present-day Unix timestamp in seconds is 10 digits, while the equivalent in milliseconds (common in JavaScript's Date.now()) is 13 digits, and the tool uses that difference to interpret your input correctly.

Will this still work correctly after the Year 2038 problem's cutoff date?

Yes — as covered in the Year 2038 guide, this tool uses standard JavaScript date handling rather than a 32-bit integer, so it isn't subject to that specific overflow limitation.