Time Zone Converter
Free time zone converter. Find the equivalent time in any city or zone — schedule meetings across UTC, EST, PST, GMT, IST, JST, and 100+ other regions.
Quick answer
Time zones are offsets from UTC, ranging from UTC−12 to UTC+14. Most U.S. zones shift 1 hour forward each March (DST) and back each November. To convert: subtract the source's UTC offset to get UTC, then add the destination's offset.
Time Zone Converter
How it works
Converts a time from one time zone to another by computing the offset between the two zones, accounting for daylight saving time when applicable. Uses standard IANA time zone identifiers under the hood.
When to use it
Use this when scheduling international meetings, coordinating with remote team members, planning travel, or watching live events broadcast from another country. Critical for anyone working across time zones daily.
Common mistakes
Forgetting daylight saving time transitions. The US, Europe, and Australia all switch on different dates, so a 3 PM EST meeting might shift by an hour relative to your friend in London twice a year.
How the time zone converter works
Each time zone has a UTC offset — the number of hours ahead or behind Coordinated Universal Time. New York standard is UTC−5; New York during daylight saving (March-November) is UTC−4. To convert any time, subtract the source's offset to get the time in UTC, then add the destination's offset. The calculator does this automatically and accounts for daylight saving differences across regions, which is the part most manual conversions get wrong: the U.S., EU, Australia, and other regions all switch on different dates, and several countries (Arizona except Navajo Nation, most of Asia and Africa, all of Russia) don't observe DST at all.
When to use it
Scheduling meetings across regions. Planning international flights — the local arrival time on your boarding pass already accounts for the conversion, but knowing the elapsed flight time requires manual math. Watching live broadcasts of sporting events, breaking news, or product launches that announce times in a single zone. Coordinating with remote teammates, freelancers, or family in different countries.
Common mistakes
- Forgetting daylight saving. The U.S. observes DST from the second Sunday of March to the first Sunday of November. The EU's DST window is slightly different. For 2-3 weeks per year, the U.S.-Europe time difference is 1 hour off the 'usual' offset.
- Using GMT and UTC interchangeably. They differ by less than a second and are functionally identical for most purposes, but in technical contexts (astronomy, satellite communications) you need UTC.
- Crossing the international date line carelessly. A flight from Tokyo to Honolulu can land 'before' it took off on the local clock. The 24-hour calendar difference doesn't reflect a time-travel situation, just a calendar boundary.
Frequently asked questions
How do I convert time between time zones?
Find the UTC offset of each zone, subtract the source offset to get UTC, then add the destination offset. Or use the calculator above — it handles DST and edge cases automatically.
What's the difference between EST and EDT?
EST (Eastern Standard Time) is UTC−5, used from November to March. EDT (Eastern Daylight Time) is UTC−4, used from March to November. Both refer to the U.S. East Coast — only the offset and label change with daylight saving.
Does India observe daylight saving time?
No. India is on UTC+5:30 year-round. China, Japan, most of Russia, most of Africa, and Arizona (USA) also do not observe DST. The U.S. (most), Canada (most), Mexico (most), the EU, the UK, Australia (some states), and New Zealand all observe DST on varying schedules.