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Everyday tools / Unix Timestamp Converter

Unix Timestamp Converter

Convert Unix timestamps and ISO 8601 dates across time zones locally.

ISO input requires Z or an explicit UTC offset; the time zone controls the displayed result.

How to use

Choose seconds, milliseconds or ISO 8601 with an explicit UTC offset. Enter an IANA display time zone, then convert.

Example

Unix 0 is 1970-01-01T00:00:00.000Z.

Frequently asked questions

How are daylight-saving changes handled?

An explicit input offset identifies one instant. The selected IANA zone determines its display, including daylight-saving rules.