Time Zone Converter
Convert a time across multiple time zones at once. Handles daylight saving automatically and shows the UTC offset for each.
- New YorkAmerica/New_York · —
- LondonEurope/London · —
- KolkataAsia/Kolkata · —
- TokyoAsia/Tokyo · —
Offsets come from your browser's IANA time zone database, so daylight saving is applied correctly for the date you choose — not just for today.
About Timezone Converter
Compare one moment across several cities at once — the practical way to find a meeting slot that works for a distributed team. Daylight saving is handled automatically using your browser's IANA time zone database, so the offsets are correct for the date you pick, not just today.
How to use it
- Set a reference date and time.
- Add the cities or zones you care about.
- Read each local time and UTC offset side by side.
Frequently asked questions
Is daylight saving handled?
Yes. Conversions use the IANA time zone database built into your browser, which knows each zone's DST rules and applies the ones in force on the date you selected.
Why does a zone's offset change between dates?
Because of daylight saving. New York is UTC−5 in winter and UTC−4 in summer, and the switchover dates differ from Europe's, so the gap between London and New York is not constant.
What is UTC?
Coordinated Universal Time, the reference all other zones are expressed against. It does not observe daylight saving. GMT is effectively the same for civil timekeeping.
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