Unix Timestamp Converter
Convert Unix timestamps to ISO 8601 strings and relative time descriptions.
Processed locally
This tool runs in the browser.
Enter a Unix timestamp (seconds or milliseconds) or an ISO 8601 date string.
ISO 8601
2026-09-07T11:32:57.000Z
Relative Time
1 second ago
UTC String
Mon, 07 Sep 2026 11:32:57 GMT
Local Time
9/7/2026, 11:32:57 AM
Formatted Date
2026-09-07 11:32:57 UTC
Unix Seconds
1788780777
Unix Milliseconds
1788780777000
About Unix Timestamps
A Unix timestamp counts elapsed seconds since January 1, 1970 UTC.
Standard Unix timestamps use 10 digits (seconds). JavaScript timestamps use 13 digits (milliseconds).
ISO 8601 represents dates and times in a universal, unambiguous text format.