Unix Timestamp Converter: Epoch Time Explained

You've seen numbers like 1783224443 in logs, databases and APIs — that's a Unix timestamp. It looks cryptic but it's just a count of seconds. Here's what epoch time is and how to convert it.

Convert timestamps instantly

Paste a Unix timestamp into the Unix timestamp converter to get a human-readable date, or enter a date to get its timestamp. It handles both seconds and milliseconds.

What is epoch time?

A Unix timestamp is the number of seconds since 00:00:00 UTC on 1 January 1970 — the "Unix epoch". Because it's a single number in UTC, it sidesteps time zones and date formatting entirely, which is why systems love it.

Why developers use it

Timestamps are easy to store, compare and do math with — "is A before B?" is just a number comparison, and "add one hour" is "+3600". No parsing, no locale, no ambiguity between DD/MM and MM/DD.

Seconds vs milliseconds

Unix time is traditionally in seconds (10 digits), but JavaScript and many APIs use milliseconds (13 digits). If your date comes out wildly wrong, you've likely mixed the two — divide or multiply by 1000.

The year 2038 problem

Systems that store timestamps as a 32-bit signed integer overflow on 19 January 2038. Modern 64-bit systems are fine for billions of years — but it's why legacy systems get patched.