Free Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back — in seconds or milliseconds.

Current Unix time
—
ISO 8601 (UTC)—
UTC—
Local—
Seconds—
Milliseconds—

How to use / FAQ

The card at the top shows the current Unix time, ticking every second. Paste any epoch value to see it as a UTC and local date, or pick a date and time to get the timestamp back — both directions update as you type.

What is a Unix timestamp?

It's the number of seconds (or milliseconds) elapsed since 00:00:00 UTC on 1 January 1970 — a compact, timezone-free way to store a moment in time. To read one moment across several cities instead, use the time zone converter.

Seconds or milliseconds?

The converter auto-detects: values with 13 or more digits are read as milliseconds, shorter ones as seconds. It tells you which interpretation it used.

Why does my timestamp look wrong by a factor of 1000?

Seconds and milliseconds are easy to mix up — JavaScript uses milliseconds while most databases and APIs use seconds. If a date lands in 1970 or far in the future, you've likely got the wrong unit; this tool auto-detects and tells you which it used.

Which time zone is the local value?

Your device's current time zone, taken from the browser. The UTC and ISO values are zone-independent.