websystemer / timestamp-converter
Unix Timestamp Converter
Convert Unix timestamps (seconds or milliseconds) to readable dates and back, in any time zone. Runs in your browser.
Current Unix time
Result
Unix time in one paragraph
Unix time counts the seconds since 1 January 1970 00:00:00 UTC. Many APIs and databases use it because it is a single number with no time zone attached. JavaScript and Java use milliseconds instead, which is why a current timestamp has 13 digits there and 10 digits elsewhere.
How input is read
- A number with up to 11 digits is treated as seconds, longer numbers as milliseconds.
- Anything else is parsed as a date, for example
2026-11-06T12:00:00Zor6 Nov 2026 14:30. - A date without a time zone offset is read in your local time.
Privacy
Conversion uses the browser's own date and Intl support. Nothing is uploaded.
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