Time Zone Converter
A free time zone converter for any two places, with daylight saving applied for the date you pick.
Pick any two cities, countries or time zones above.
World clock
The time right now in your own city and around the world. Add the places you care about; they are remembered on this device only.
Converters for the most-used pairs
Each page has the converter plus a guide written for the people who use that pair: shift timings, office hours, market hours and the weeks when the gap changes.
Just need the current time? See US time now, UK time now, Singapore time now, major cities or countries. All converters →
How this time zone converter works
Every conversion here uses the IANA time zone database, the shared record of time zone rules that governments report their changes to and that browsers and phones ship with. Your browser applies those rules to the exact date you pick, so a time in March or November, when many countries change their clocks, is converted with the offset that will really be in force that day.
Most time zone mistakes come from three things. Daylight saving time: countries change on different dates, and many never change at all. Half-hour offsets: India is UTC+5:30 and Nepal UTC+5:45, so a whole hour in one place is a half hour in another. The date line: when it is Monday morning in Tokyo it is still Sunday evening in New York. The converter shows the date on both sides so the last one never catches you out.
Getting meeting times right
- Write the zone as a city, or as “ET” and “PT”, rather than “EST” and “PST” all year. New York is on EDT, not EST, from March to November.
- Save recurring meetings in a named time zone in your calendar. When one country changes its clocks, the calendar moves the meeting for everyone else.
- Check the weeks around clock changes. In 2026 the UK changes on 25 October and the US on 1 November, so for that week New York is 4 hours behind London instead of 5.
- For three or more cities, use Plan a meeting. The green band shows when everyone is inside 9–5; if there is none, rotate who takes the early or late slot.
Time zone abbreviations
Abbreviations are handy but ambiguous: CST means US Central Time and also China Standard Time, and IST is used for India, Ireland and Israel. If in doubt, use a city name.
| Abbreviation | Name | UTC offset | Used in |
|---|---|---|---|
| EST | Eastern Standard Time | UTC−5 | Eastern US and Canada, November to March |
| EDT | Eastern Daylight Time | UTC−4 | Eastern US and Canada, March to November |
| CST | Central Standard Time | UTC−6 | Central US in winter; Mexico City and Saskatchewan all year |
| CDT | Central Daylight Time | UTC−5 | Central US, March to November |
| MST | Mountain Standard Time | UTC−7 | Mountain US in winter; most of Arizona all year |
| MDT | Mountain Daylight Time | UTC−6 | Mountain US, March to November |
| PST | Pacific Standard Time | UTC−8 | US West Coast, November to March |
| PDT | Pacific Daylight Time | UTC−7 | US West Coast, March to November |
| HST | Hawaii Standard Time | UTC−10 | Hawaii, all year |
| GMT | Greenwich Mean Time | UTC+0 | UK in winter; Iceland, Ghana and Senegal all year |
| BST | British Summer Time | UTC+1 | UK, late March to late October |
| CET | Central European Time | UTC+1 | Most of the EU in winter |
| CEST | Central European Summer Time | UTC+2 | Most of the EU, late March to late October |
| EET | Eastern European Time | UTC+2 | Finland, Greece, Romania and neighbours in winter |
| GST | Gulf Standard Time | UTC+4 | United Arab Emirates and Oman |
| PKT | Pakistan Standard Time | UTC+5 | Pakistan |
| IST | India Standard Time | UTC+5:30 | India, all year |
| SGT | Singapore Time | UTC+8 | Singapore |
| CST | China Standard Time | UTC+8 | China |
| JST | Japan Standard Time | UTC+9 | Japan (Korea uses KST, also UTC+9) |
| AEST | Australian Eastern Standard Time | UTC+10 | Sydney, Melbourne and Canberra in winter; Brisbane all year |
| AEDT | Australian Eastern Daylight Time | UTC+11 | Sydney, Melbourne and Canberra, October to April |
| NZST | New Zealand Standard Time | UTC+12 | New Zealand, April to September |
| UTC | Coordinated Universal Time | UTC+0 | The world reference; never changes |
Frequently asked questions
How do I convert a time between two time zones?
Pick the two places in From and To (you can type a city, a country or an abbreviation such as IST or PST), then either keep it on Now or set a time and date. Both local times, both dates and the gap between them update as you type. The arrow button swaps the direction.
Does the converter handle daylight saving time?
Yes. It uses the time zone rules built into your browser for the exact date you choose, so it knows, for example, that New York is 9 hours 30 minutes behind India in summer and 10 hours 30 minutes behind in winter. Governments do change their rules, so keep your browser updated.
How do I find a meeting time for people in three or more cities?
Switch to Plan a meeting and add everyone’s city. Each row shows that city’s day, the green band marks the hours when everyone is between 9 AM and 5 PM, and you can drag the white window to try any slot and read each person’s local time.
What is the difference between EST and EDT?
EST (Eastern Standard Time) is UTC−5 and is used from early November to mid-March. EDT (Eastern Daylight Time) is UTC−4 and is used from mid-March to early November. “ET” means whichever of the two is in force.
Why does the other city show a different date?
Places far apart can be on different calendar days. When it is 9 AM on Monday in Tokyo, it is 8 PM on Sunday in New York during US daylight time. The converter shows the date on both sides and says when it is already the next day or still the previous day.
Is it free, and do I need an account?
It is free and there is no sign-up. The converter, planner and clocks run in your browser; the cities you add to the planner and world clock are saved only on your device.