Scheduling a call between New York, London and Sydney is where most people get daylight saving wrong. This free time zone converter lets you pick a date and time in any city's time zone and instantly see what it will be everywhere else that matters to you. It uses the official IANA time zone database built into your browser, so daylight saving time is handled automatically, including the awkward weeks in March and October/November when the US and Europe change their clocks on different dates and the gap between them shrinks by an hour. You can convert between common abbreviations like EST/EDT, PST/PDT, GMT/BST, CET/CEST and AEST/AEDT by choosing the city rather than guessing the abbreviation. We pre-load popular cities for our readers in the US, UK, Canada, Australia and Germany, plus UTC, and you can add any of more than 400 zones or remove the ones you don't need. Each result shows the local weekday and date, so you can see when a meeting lands on "tomorrow" in Asia-Pacific. Times are calculated on your device with no network lookups, so the tool keeps working offline once the page has loaded.
Convert a time
Converted times
Uses your browser’s built-in time zone database. Your own zone: .
How to use the time zone converter
- Pick the date and time of your event.
- Choose the time zone that time is in.
- Read the converted local times. Add more cities if needed, or remove ones you don't need.
Time zone tips for international meetings
- Say the city, not the abbreviation. "EST" is often used loosely in summer when New York is really on EDT.
- The US changes clocks on the second Sunday in March and first Sunday in November; the UK and EU change on the last Sundays of March and October.
- Australia's daylight saving runs roughly October to April, and Queensland doesn't use it.
FAQ
Does it handle daylight saving time?
Yes. It uses the IANA time zone rules built into your browser, which include historic and scheduled DST changes.
What’s the difference between GMT and UTC?
For everyday use they’re the same time. UTC is the precise scientific standard; GMT is also the name of the UK’s winter time zone. In summer the UK uses BST (UTC+1).
Why does a time show “+1 day�
Places far east, like Sydney or Tokyo, are often already into the following calendar day.
Is it accurate for future dates?
Yes, as long as governments don’t change their rules. Browsers update their time zone data with normal updates.
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