DEVELOPER TOOL

Timestamp & Time Zone Converter

Convert Unix and ISO timestamps across named time zones with DST-aware output.

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Timestamp or date

Input typeAdd time zone

Why named time zones matter

Seconds or milliseconds

Automatic detection is shown explicitly and can be overridden. This avoids silently converting the same number using the wrong unit.

DST-aware output

Named IANA zones such as Europe/London apply the zone's daylight-saving rules for the selected instant.

ISO 8601

The ISO result is expressed in UTC with a trailing Z, making the instant portable between systems.