Free Online Timezone Converter

1. Enter the source date and time using the datetime picker.
2. Pick the source zone from the From dropdown.
3. Pick the target zone from the To dropdown.
4. Read the converted date, time, weekday and UTC offset side by side.

Scheduling across time zones is where mistakes happen — "3pm next Tuesday" means different things to a sender in San Francisco and a receiver in Berlin, especially around DST boundaries where one side has shifted clocks and the other hasn't. A converter removes the ambiguity by anchoring wall-clock time to a specific IANA zone and rendering the equivalent in the target zone.

Remote-team leads scheduling cross-region standups, recruiters arranging interviews across continents and consultants billing in client zones all use this kind of tool daily. It uses every IANA zone the browser knows (the full output of Intl.supportedValuesOf('timeZone')) and renders results through Intl.DateTimeFormat, which carries the IANA timezone database — including current and future DST rules. So 8 March 2026 9am New York correctly shows as 10pm Tokyo, while 15 March (after US clocks spring forward) shifts by an hour.

The result panel shows the date, time, weekday and UTC offset for both source and target, so you can spot when the conversion has rolled across midnight.