Unix Timestamp Converter
Convert a Unix/epoch timestamp to a readable date (local, UTC, ISO, and relative) and back — seconds or milliseconds, auto-detected.
Unix timestamp → date
Date → unix timestamp
Frequently asked questions
Does it support seconds and milliseconds?+
Yes — it auto-detects: 13+ digit values are treated as milliseconds, shorter values as seconds.
What is a Unix timestamp?+
It's the number of seconds (or milliseconds) since 1 January 1970 UTC — a compact, timezone-independent way to store a moment in time.
Which timezone is used?+
The 'Local' output uses your browser's timezone; UTC and ISO are shown alongside so you can compare.
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