Convert Unix timestamps to readable date and time formats and vice versa instantly. Works client-side in your browser.
How to use it
- Paste a Unix timestamp, or press the button to use the current time.
- Read the date in UTC, in your local time and in ISO 8601 form.
- Or enter a date and time to get the timestamp back.
Frequently asked questions
What is a Unix timestamp?
The number of seconds elapsed since 1 January 1970 at midnight UTC. Because it carries no time zone, it is the safest way to store an instant.
Seconds or milliseconds?
Unix timestamps are in seconds, but JavaScript works in milliseconds. A timestamp with thirteen digits is milliseconds and needs dividing by a thousand.
What is the year 2038 problem?
A signed 32-bit timestamp overflows on 19 January 2038. Modern systems use 64-bit values, but old embedded software and legacy databases are still exposed.