Unix Timestamp Converter

What Is a Unix Timestamp?

A Unix timestamp is the number of seconds elapsed since the Unix epoch, 1970-01-01 00:00:00 UTC. It's the universal way computers store time, independent of time zones. This converter auto-detects whether you entered seconds or milliseconds (by length), shows the UTC, ISO 8601, and local representations, and converts a calendar date back into a timestamp. Everything is computed in your browser.