Unix Timestamp Converter
Convert Unix epoch time to dates and back
How it works
Enter a Unix timestamp in seconds or milliseconds (auto-detected) or any date string, and it's broken down into epoch seconds, epoch milliseconds, ISO 8601, UTC, your local time, and a relative description. Leave it empty to see the current time tick live. The “Now” button fills in the current epoch.
Frequently asked
Seconds or milliseconds?
Both — the tool auto-detects: values of 13+ digits are treated as milliseconds, shorter values as seconds.
What is a Unix timestamp?
The number of seconds (or milliseconds) elapsed since 00:00:00 UTC on 1 January 1970, the Unix epoch — a compact, timezone-independent way to store time.
What date formats can I paste?
Any string the browser can parse, including ISO 8601 (2026-06-23T00:00:00Z) and common date formats.