Free Unix Timestamp Converter

What is a Unix timestamp?

A Unix timestamp is the number of seconds (or milliseconds) since 1 January 1970 UTC, known as the epoch. It is a compact, time-zone-free way to store and compare moments in time, used across databases, APIs, logs, and programming languages. This converter turns a timestamp into a readable date, or a date back into a timestamp.

How to use this timestamp converter

Paste a Unix timestamp (seconds or milliseconds are both detected) or type a date, then click Convert. You get the value as Unix seconds, Unix milliseconds, ISO 8601, a UTC string, and your local time, all at once. Click Now to drop in the current timestamp. Everything runs in your browser.

Timestamp FAQ

Seconds or milliseconds? Unix time is usually in seconds. JavaScript and many APIs use milliseconds. The tool detects which you pasted by its length and shows both.

What time zone is the output? UTC and ISO are absolute, while the Local line uses your browser time zone.

Is my data safe? Yes. The conversion runs entirely in your browser and nothing is uploaded.