Date Difference Calculator
Find calendar time, total days, weeks and weekdays between dates.
Calculator toolsUnix Timestamp Converter
Convert Unix seconds or milliseconds to dates in UTC and local time, or convert a date to Unix time.
Processed locally in your browser — your data is not uploaded.Loading your tool…
How to use Unix Timestamp Converter
- Choose direction and unit.
- Enter a timestamp or local date and time.
- Compare explicit UTC and local results.
What timezone does a Unix timestamp use?
It represents an instant independent of timezone; Metyris shows UTC and your browser-local time.
No sign-up is required. The calculation or transformation happens in this browser tab and the result is available immediately.
BEFORE YOU RELY ON THE RESULT
Practical guidance
Unix time records an instant as the number of seconds or milliseconds since 1 January 1970 at 00:00:00 UTC. The same timestamp can be displayed in UTC and in your device's local timezone.
Seconds and milliseconds
A current Unix timestamp usually has 10 digits when measured in seconds and 13 digits when measured in milliseconds. Choose the matching unit before converting so the date is interpreted correctly.
Convert in either direction
Use timestamp to date to read an epoch value as UTC and local time. Use date to Unix to turn a local date and time into seconds or milliseconds for logs, APIs and databases.
Related workflow
- Date Difference Calculatormeasure the time between two calendar dates
- URL Encoder / Decoderprepare query values for a URL
Good to know
Seconds or milliseconds?+
Millisecond timestamps have three additional digits and are common in JavaScript.
How is a typed date interpreted?+
As a date and time in your browser's current timezone.
Is my input uploaded?+
No. This tool runs in your browser and does not send input or results to Metyris or a third-party processor.