Time Zone Converter — Find Out What Time It Is Anywhere in the World

Enter a time in your city and instantly see what time it is anywhere else, how many hours ahead or behind they are, and whether daylight saving time is currently in effect

Convert Time
From — your time
To — target time
Result

Select time zones and press Convert

World Clock — Current Time in Major Cities
United States New York —:—:— — —
United Kingdom London —:—:— — —
France Paris —:—:— — —
UAE Dubai —:—:— — —
United States Los Angeles —:—:— — —
Singapore Singapore —:—:— — —
Japan Tokyo —:—:— — —
Australia Sydney —:—:— — —
Popular Time Zone Pairs — Live Difference Right Now
New York → London

The most searched time zone pair globally. Usually 5 hours difference — but shifts by 1 hour during the weeks when only one country has changed its clocks

New York → Los Angeles

East Coast vs West Coast — always exactly 3 hours difference since both cities observe DST on the same dates

London → New York

Core business corridor between Europe and the US East Coast. Typically 5 hours, sometimes 4 or 6 in transition weeks

London → Dubai

Dubai does not observe DST — the difference is stable: Dubai is 4 hours ahead in winter, 3 hours ahead in summer

New York → Tokyo

Large gap — Tokyo does not observe DST. The difference changes once a year when the US switches clocks

London → Singapore

Singapore is always UTC+8 — no DST. The difference is 7 hours in winter (GMT) and 8 hours in summer (BST)

Los Angeles → London

Popular route for tech industry and media. Usually 8 hours — morning in LA is late afternoon in London

New York → Chicago

Eastern vs Central US — always exactly 1 hour difference, DST observed simultaneously

UTC, GMT and Daylight Saving Time — explained simply
UTC — what it means and how to read UTC+5, UTC−8

UTC (Coordinated Universal Time) is the global reference point for all clocks on Earth. Every time zone is defined as an offset from UTC. "UTC+5" means local time is 5 hours ahead of UTC. "UTC−8" means 8 hours behind. If UTC is 12:00, New York (UTC−5) is 07:00, and Tokyo (UTC+9) is 21:00. UTC never changes for daylight saving time — it is constant year-round. That is why pilots, sailors, stock traders and software developers use it: it is identical everywhere on the planet.

GMT — how it differs from UTC and why you will see both terms

GMT (Greenwich Mean Time) is the time at the Prime Meridian in Greenwich, London, established in the 19th century. UTC replaced it in the 1960s and is based on atomic clocks. In practice the difference between GMT and UTC is less than one second — for everyday purposes they are interchangeable. If you see "GMT+3" read it as "UTC+3". GMT appears more often in older documents and British contexts; UTC is the standard in modern technology, aviation and international standards.

DST (Daylight Saving Time) — what it is, which countries use it, and which do not

DST (Daylight Saving Time) is the practice of moving clocks 1 hour forward in spring and back in autumn. The goal is to shift daylight into evening hours, reducing the use of artificial lighting. Most of Europe, the US and Canada observe DST — which means the difference between two time zones can change twice a year. For example, in winter New York is 5 hours behind London; in summer only 4. Countries without DST include the UAE, Japan, China, India and most of Africa and Southeast Asia. With Dubai the difference is always predictable; with London it depends on the season.

Frequently Asked Questions About Time Zones
What is the time difference between New York and London right now?

Usually 5 hours — London is ahead of New York. However, during the short transition windows in spring and autumn when one country has already changed its clocks and the other has not, the difference temporarily becomes 4 or 6 hours. Use the converter above for the exact difference at this moment.

What is the time difference between EST and GMT?

EST (Eastern Standard Time, UTC−5) is 5 hours behind GMT (UTC+0). When New York is on EDT (Eastern Daylight Time, UTC−4) in summer, the difference from GMT is 4 hours. From BST (British Summer Time, UTC+1) the difference is also 5 hours in winter and 4 hours in summer — because both shift by 1 hour but in opposite directions from UTC.

How do I convert PST to EST?

Pacific Standard Time (PST, UTC−8) is always exactly 3 hours behind Eastern Standard Time (EST, UTC−5). This holds true in both winter and summer because both time zones observe DST on the same dates. Simply add 3 hours: if it is 9:00 AM in Los Angeles, it is 12:00 PM in New York.

What time zones does the United States have?

The contiguous US spans four main time zones: Eastern (ET, UTC−5/−4), Central (CT, UTC−6/−5), Mountain (MT, UTC−7/−6), and Pacific (PT, UTC−8/−7). Alaska uses AKST (UTC−9/−8) and Hawaii uses HST (UTC−10, no DST). The first number is the winter (standard) offset; the second is the summer (daylight) offset.

Which countries are in the same time zone as the United Kingdom?

In winter (GMT, UTC+0): Iceland (permanent), Portugal, Morocco and parts of West Africa. In summer (BST, UTC+1): the UK shifts to align with Central European Time, joining France, Germany, Italy, Spain and most of Western Europe. Ireland observes IST (Irish Standard Time) which equals BST in summer.

Why does the time difference between some cities change during the year?

Because countries change their clocks on different dates. The EU and US switch clocks in the same direction but on different weekends in March and November. During those transition weeks — typically 1 to 3 weeks — the difference between, say, London and New York will be 4 or 6 hours instead of the usual 5. The converter always reflects the real current difference for the date you enter.

Why are some time zone offsets not whole hours?

Some countries use non-integer offsets for historical or geographical reasons. India is UTC+5:30, Nepal UTC+5:45, Iran UTC+3:30, and several Australian states use UTC+9:30 or UTC+10:30. This means a conversion involving India can produce a result like "6 hours and 30 minutes difference". The converter handles all of these automatically.

When do clocks change in the US and UK in 2026?

United States 2026: clocks spring forward on 8 March (2:00 AM → 3:00 AM) and fall back on 1 November (2:00 AM → 1:00 AM). United Kingdom 2026: clocks spring forward on 29 March (1:00 AM → 2:00 AM) and fall back on 25 October (2:00 AM → 1:00 AM). The gap between the two switchover dates is why the US−UK difference is temporarily different for a few weeks each spring and autumn.

Time Zone Converter — How to Convert Time Between Cities Around the World

A time zone is a region of the Earth that observes a uniform standard time. The world is divided into 24 primary zones (each spanning roughly 15 degrees of longitude), but in practice the boundaries follow country and regional borders. This is why some offsets are not whole numbers — India is UTC+5:30, Nepal UTC+5:45, and parts of Australia use UTC+9:30 or UTC+10:30.

How to use the time zone converter

Select your city or time zone in the "From" field — the converter detects it automatically from your browser but you can change it. Enter the date and time you want to convert. Hit "Now" to fill in the current time instantly. Then choose the destination city in the "To" field and press Convert. You will see the exact local time there, how many hours ahead or behind they are, and whether daylight saving time is currently active. The swap button reverses the two zones in one click.

Why the time difference between the same two cities can change during the year

The reason is daylight saving time (DST). Most of Europe, the US and Canada move their clocks forward in spring and back in autumn — but not on the same dates. When only one of two cities has made the switch, the difference between them is temporarily different from the rest of the year. For example, the US and UK do not change clocks on the same weekend, so for a few weeks in March and November the New York–London gap is 4 or 6 hours instead of the usual 5. The converter accounts for all of this automatically.

When a time zone converter is useful

Remote work and global teams: knowing when a colleague's working hours overlap with yours. Scheduling calls and video meetings: avoiding the classic mistake of calling someone at 3 AM. Travel and flights: understanding what time it will be when you land. Live events and streams: not missing a broadcast because of a time zone mix-up. Financial markets: the NYSE, London Stock Exchange and Tokyo Stock Exchange open at completely different local times, and traders need to convert between them constantly.

Accuracy and technical details

This converter uses the browser's built-in Intl (Internationalization API) with full IANA timezone database support. This means DST transitions are handled correctly for every location, including historical rule changes. The converter also displays the UTC offset for each zone and warns you if the conversion crosses midnight — for example when it is still Friday in New York but already Saturday in Tokyo.

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