Unix Timestamp Converter

Convert Unix timestamps to dates and back, in any timezone. No account, no upload, no limit.

Unix timestamp (seconds)

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Or convert a date back to a timestamp

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Timestamps are seconds, not milliseconds. Multiply by 1000 for JavaScript Date.

Seconds or milliseconds

Unix time is seconds. JavaScript Date takes milliseconds, so a timestamp of 1761696000 becomes 1761696000000. Getting this wrong lands you in January 1970.

Why the date looks different in two places

A timestamp has no timezone — it is an instant. The same value renders as different clock times depending on the viewer. Store UTC, display local.

The 2038 problem

32-bit signed timestamps overflow in January 2038. Anything storing dates as 32-bit integers needs to move to 64-bit before then.

Related free tools

This tool runs entirely in your browser using standard web APIs. There is no server component, so there is nothing to upload and nothing to log.