What is a Unix timestamp?

The number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC — the Unix epoch. It's the standard way most systems store a point in time as a plain number.

How do I tell if a timestamp is in seconds or milliseconds?

A current seconds-based timestamp is 10 digits; a current milliseconds-based one is 13. If your value looks 1000x too large or too small, switch the unit selector.

Runs in your browser

Unix Timestamp Converter

A dedicated Unix-timestamp-focused converter: paste an epoch value in seconds or milliseconds to get a UTC and local date, or pick a date to get its Unix timestamp in both units.

Unix timestamp → date

Timestamp

Date → Unix timestamp

Date and time (your local timezone)

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Timestamp ConverterConvert between Unix timestamps and human-readable dates.Time Zone ConverterConvert a date and time between time zones, with real DST handling.

Features

Convert epoch seconds or milliseconds to a UTC and local date
Convert a date back to a Unix timestamp in both units
One-click "current timestamp" shortcut

How to use

Paste an epoch value and select seconds or milliseconds.
Or pick a date to get its epoch value in both units.

FAQ

What is a Unix timestamp?: The number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC — the Unix epoch. It's the standard way most systems store a point in time as a plain number.
How do I tell if a timestamp is in seconds or milliseconds?: A current seconds-based timestamp is 10 digits; a current milliseconds-based one is 13. If your value looks 1000x too large or too small, switch the unit selector.