Time Zone Converter
Convert any date and time between two time zones, with current UTC offset and daylight-saving handling.
Converted time
From
How time zone conversion works
Every time zone has an offset from Coordinated Universal Time (UTC). To convert between zones, we compute the moment in UTC, then re-format it for the target zone — using the IANA time zone database and the browser's Intl.DateTimeFormat API for accurate daylight-saving handling.
DST transitions matter: New York is UTC−5 in winter and UTC−4 in summer; some places (Arizona, India) don't observe DST at all. Your browser handles all 600+ IANA zones — we expose ~80 popular ones in the dropdowns above. To request a zone we don't list, email us.
Common conversion examples we'll soon expand into a comparison grid: New York → London, San Francisco → Tokyo, London → Sydney, Singapore → São Paulo.