Method
How the unix timestamp converter works
Unix time counts elapsed seconds from 00:00:00 UTC on 1 January 1970. Values with 13 digits are treated as milliseconds.
Example
Unix timestamp converter example
A 10-digit contemporary timestamp is normally seconds; a 13-digit value is normally milliseconds.
FAQ
Unix timestamp converter FAQ
Is Unix time tied to a time zone?
No. It identifies an instant; time zones only affect how that instant is displayed.
What is the difference between seconds and milliseconds?
Millisecond timestamps contain 1,000 units per second and are usually three digits longer.
Does Unix time include leap seconds?
Common Unix implementations do not represent leap seconds as distinct timestamp values.