What does a Unix timestamp represent?
A Unix timestamp shows the elapsed time since the 1970-01-01 UTC epoch as a number.
Having one time format makes logs, API responses, and system comparisons easier to reason about.
Unix Timestamp Converter
Convert dates to Unix seconds or milliseconds, or turn a timestamp back into a readable date.
Unix Timestamp Converter
Convert between dates and Unix seconds/milliseconds entirely in the browser.
A Unix timestamp counts the time elapsed since 1970-01-01 00:00:00 UTC.
The browser time zone is used.
Results update instantly.
Unix timestamp
Seconds
1774209300
Milliseconds
1774209300000
ISO
2026-03-22T19:55:00.000Z
Local view
Sunday, March 22, 2026 at 7:55:00 PM
Browser time zone
UTC
Date and time
2026-03-22T19:55
Outputs are calculated automatically.
A Unix timestamp counts the time elapsed since 1970-01-01 00:00:00 UTC.
Should I use seconds or milliseconds?
Many systems use second-based timestamps, while some APIs expect millisecond precision.
This tool shows both so you can quickly confirm which unit a workflow requires.
Why does the time zone matter?
The same Unix value can display differently in different local time zones.
That is why the local date, ISO string, and numeric timestamp should be read together.