Time Zone Converter

A meeting time is more than a number and a UTC offset. Cities can change daylight-saving rules, and the difference between two locations may vary during the year.

This converter treats the entered value as local wall time in the source zone, resolves it to a real instant, and then formats that instant in the destination zone. The IANA data built into the browser supplies the applicable historical or future offset.

Choose any supported zone, enter a date and time, and see the converted local date, weekday, time, and both UTC offsets immediately. The swap button reverses the direction without retyping the values.

Everything runs locally. No schedule, location, or date is sent to a server.