In short: A time zone converter shows what a given date and time in one place is in other time zones, accounting for daylight saving time automatically.
About Time Zone Converter
Scheduling a call between New York, London and Singapore means juggling offsets that change twice a year — and not on the same dates in every country. This converter uses your browser’s built-in IANA time-zone database, the same data your operating system uses, so daylight saving transitions are applied correctly for any date you pick.
Choose a date, time and source zone, and see the matching local time in a list of cities. Add or remove zones to match your team. The source defaults to your current time zone.
How to use Time Zone Converter
- Pick the date and time.
- Choose the time zone that time is in.
- Read the converted times for each city in the list.
- Add more zones from the menu, or remove ones you do not need.
Examples
10:00 in New York on 10 March 2026 is 14:00 in London (New York is already on daylight time; the UK switches later, on 29 March).
09:00 in Tokyo is 01:00 in Berlin in winter and 02:00 in summer.
Frequently asked questions
Is daylight saving time handled?
Yes. Offsets come from the IANA time-zone database built into your browser and are correct for the date you choose.
What is the difference between GMT and UTC?
For everyday purposes they are the same time. UTC is the precise scientific standard; GMT is also the name of the UK’s winter time zone.
Why do some zones have 30- or 45-minute offsets?
Some countries, such as India (UTC+5:30) and Nepal (UTC+5:45), chose offsets that better fit their geography.
Is my location used?
Only your browser’s time-zone setting is read to choose a default. Nothing is sent anywhere.
Updated November 2026 · Free, no signup · How we build and test tools