Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
UTC
Wed, 29 Apr 2026 14:52:56 GMT
Local Time
4/29/2026, 2:52:56 PM
Relative
just now
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC, known as the Unix epoch. It is a standard way to represent points in time in programming and databases.
Why do developers use Unix timestamps?
Unix timestamps are timezone-independent, easy to store as a single integer, and simple to compare or do arithmetic with. They are widely used in APIs, logs, and databases.
What is the difference between seconds and milliseconds?
Unix timestamps are traditionally in seconds. JavaScript and some modern APIs use milliseconds instead — that is simply the seconds value multiplied by 1000.
What does a negative Unix timestamp mean?
A negative timestamp represents a date before January 1, 1970. For example, -86400 is December 31, 1969.