Time Zone Converter
See what a given time is in another time zone — and in UTC.
About Time Zone Converter
Time Zone Converter shows what a given moment in one time zone is in any number of others, and the corresponding UTC instant. The primary use case is scheduling: a meeting at 3 PM New York time, and you need to know what that is in London, Mumbai, Tokyo, and Sydney before sending the invite — without manually calculating offsets and remembering whose DST is on this week.
Worked example: 15:00 on 2026-05-23 in America/New_York (EDT, UTC-4 in May) is 20:00 in Europe/London (BST, UTC+1), 00:30 the next day in Asia/Kolkata (IST, UTC+5:30), and 04:00 the next day in Asia/Tokyo (JST, UTC+9). Pick a source date, time, and zone; then add destination zones — the converter shows the equivalent wall-clock time in each, plus the absolute UTC instant for use in API calls and calendar entries.
Two notes worth knowing. Daylight Saving Time is handled because the converter uses the IANA time-zone database via the browser's built-in Intl API — that database knows when each region observes DST, which is the only reliable way to handle the fact that 'America/New_York' is sometimes UTC-5 (EST) and sometimes UTC-4 (EDT). Some regions like India, China, and Japan never observe DST; others have unusual non-hour offsets (India is UTC+5:30, Nepal is UTC+5:45 — half- and quarter-hour offsets are real). For a meeting scheduled near a DST transition, double-check both ends — that is when most scheduling mistakes happen.
All conversion runs in your browser using the IANA data shipped with your operating system. Nothing about the meetings or moments you convert is uploaded.