Time Difference Calculator

Enter any two cities to instantly see the time difference, live local clocks, an hour-by-hour conversion table, and the best window for scheduling calls across time zones.

Most Popular Time Comparisons

Below are the most frequently searched city pairs. Each page includes live clocks, a full hour-by-hour conversion table, DST impact notes, and scheduling advice.

Time Difference from New York

New York ↔ London 4h New York ↔ Los Angeles 3h New York ↔ Tokyo 13h New York ↔ Paris 5h New York ↔ Dubai 8h New York ↔ Sydney 15h New York ↔ Singapore 12h New York ↔ Berlin 5h New York ↔ Mumbai 9h 30m New York ↔ Hong Kong 12h New York ↔ Seoul 13h New York ↔ Chicago 1h New York ↔ San Francisco 3h New York ↔ Toronto 0h New York ↔ Mexico City 2h New York ↔ Sao Paulo 1h New York ↔ Shanghai 12h New York ↔ Bangkok 11h New York ↔ Moscow 7h New York ↔ Istanbul 7h New York ↔ Delhi 9h 30m New York ↔ Madrid 5h New York ↔ Rome 5h New York ↔ Amsterdam 5h New York ↔ Zurich 5h New York ↔ Dublin 4h New York ↔ Stockholm 5h New York ↔ Copenhagen 5h New York ↔ Vienna 5h New York ↔ Warsaw 5h New York ↔ Prague 5h New York ↔ Budapest 5h New York ↔ Athens 6h New York ↔ Helsinki 6h New York ↔ Lisbon 4h New York ↔ Brussels 5h New York ↔ Oslo 5h New York ↔ Manila 12h New York ↔ Jakarta 11h New York ↔ Taipei 12h New York ↔ Karachi 9h New York ↔ Kuala Lumpur 12h New York ↔ Tehran 7h 30m New York ↔ Tel Aviv 6h New York ↔ Beijing 12h New York ↔ Bangalore 9h 30m

Time Difference from London

London ↔ Tokyo 9h London ↔ Sydney 11h London ↔ Dubai 4h London ↔ Singapore 8h London ↔ Hong Kong 8h London ↔ Mumbai 5h 30m London ↔ Los Angeles 7h London ↔ Paris 1h London ↔ Berlin 1h London ↔ Amsterdam 1h London ↔ Toronto 4h London ↔ Seoul 9h London ↔ Bangkok 7h London ↔ Cape Town 2h London ↔ Moscow 3h London ↔ Istanbul 3h London ↔ Shanghai 8h London ↔ Delhi 5h 30m London ↔ Nairobi 3h London ↔ Lagos 1h London ↔ Manila 8h London ↔ Kuala Lumpur 8h London ↔ Jakarta 7h London ↔ Taipei 8h London ↔ Karachi 5h London ↔ Dhaka 6h London ↔ Colombo 5h 30m London ↔ Ho Chi Minh City 7h London ↔ Tel Aviv 2h London ↔ Riyadh 3h London ↔ Baghdad 3h London ↔ Amman 3h London ↔ Beirut 2h London ↔ Tehran 3h 30m London ↔ Doha 3h London ↔ Madrid 1h London ↔ Rome 1h London ↔ Lisbon 0h London ↔ Dublin 0h London ↔ Edinburgh 0h London ↔ Stockholm 1h London ↔ Oslo 1h London ↔ Copenhagen 1h London ↔ Helsinki 2h London ↔ Athens 2h London ↔ Brussels 1h London ↔ Vienna 1h London ↔ Prague 1h London ↔ Warsaw 1h London ↔ Budapest 1h London ↔ Bucharest 2h London ↔ Kiev 2h

Time Difference from Los Angeles

Los Angeles ↔ London 7h Los Angeles ↔ Tokyo 16h Los Angeles ↔ New York 3h Los Angeles ↔ Sydney 18h Los Angeles ↔ Dubai 11h Los Angeles ↔ Paris 8h Los Angeles ↔ Singapore 15h Los Angeles ↔ Seoul 16h Los Angeles ↔ Hong Kong 15h Los Angeles ↔ Chicago 2h Los Angeles ↔ Shanghai 15h Los Angeles ↔ Mumbai 12h 30m Los Angeles ↔ Berlin 8h Los Angeles ↔ Bangkok 14h Los Angeles ↔ Rome 8h Los Angeles ↔ Amsterdam 8h Los Angeles ↔ Dublin 7h Los Angeles ↔ Manila 15h Los Angeles ↔ Taipei 15h Los Angeles ↔ Bangkok 14h Los Angeles ↔ Jakarta 14h

Time Difference from Tokyo

Tokyo ↔ Sydney 2h Tokyo ↔ Singapore 1h Tokyo ↔ Seoul 0h Tokyo ↔ Hong Kong 1h Tokyo ↔ Shanghai 1h Tokyo ↔ Bangkok 2h Tokyo ↔ Mumbai 3h 30m Tokyo ↔ Dubai 5h Tokyo ↔ Paris 8h Tokyo ↔ Berlin 8h Tokyo ↔ Taipei 1h

Time Difference from Dubai

Dubai ↔ Singapore 4h Dubai ↔ Mumbai 1h 30m Dubai ↔ Tokyo 5h Dubai ↔ Sydney 7h Dubai ↔ Shanghai 4h Dubai ↔ Hong Kong 4h Dubai ↔ Bangkok 3h Dubai ↔ Riyadh 1h Dubai ↔ Doha 1h Dubai ↔ Cairo 2h Dubai ↔ Paris 3h

Time Difference from Singapore

Singapore ↔ Sydney 3h Singapore ↔ Tokyo 1h Singapore ↔ Hong Kong 0h Singapore ↔ Mumbai 2h 30m Singapore ↔ Shanghai 0h Singapore ↔ Seoul 1h Singapore ↔ Bangkok 1h Singapore ↔ Jakarta 1h Singapore ↔ Melbourne 3h Singapore ↔ Kuala Lumpur 0h Singapore ↔ Dubai 4h

Time Difference from Sydney

Sydney ↔ Auckland 2h Sydney ↔ Melbourne 0h Sydney ↔ Perth 3h Sydney ↔ Dubai 7h Sydney ↔ Hong Kong 3h Sydney ↔ Seoul 2h Sydney ↔ Mumbai 5h 30m Sydney ↔ Bangkok 4h Sydney ↔ Shanghai 3h

Time Difference from Hong Kong

Hong Kong ↔ Singapore 0h Hong Kong ↔ Tokyo 1h Hong Kong ↔ Sydney 3h Hong Kong ↔ Shanghai 0h Hong Kong ↔ Taipei 0h Hong Kong ↔ Seoul 1h Hong Kong ↔ Bangkok 1h Hong Kong ↔ Dubai 4h

Time Difference from Mumbai

Mumbai ↔ Singapore 2h 30m Mumbai ↔ Dubai 1h 30m Mumbai ↔ Tokyo 3h 30m Mumbai ↔ Sydney 5h 30m Mumbai ↔ Hong Kong 2h 30m Mumbai ↔ Shanghai 2h 30m Mumbai ↔ Bangkok 1h 30m Mumbai ↔ Seoul 3h 30m

Time Difference from Paris

Paris ↔ Tokyo 8h Paris ↔ Dubai 3h Paris ↔ Los Angeles 8h Paris ↔ Montreal 5h Paris ↔ Sydney 10h Paris ↔ Mumbai 4h 30m Paris ↔ Shanghai 7h Paris ↔ Singapore 7h Paris ↔ Berlin 0h Paris ↔ Tokyo 8h Paris ↔ Ho Chi Minh City 6h Paris ↔ Seoul 8h Paris ↔ Madrid 0h Paris ↔ Rome 0h Paris ↔ Amsterdam 0h Paris ↔ Brussels 0h Paris ↔ Lisbon 1h

More City Comparisons

Accra

Accra vs London Accra vs New York

Addis Ababa

Addis Ababa vs London Addis Ababa vs Dubai

Adelaide

Adelaide vs London Adelaide vs Tokyo

Amsterdam

Amsterdam vs Tokyo Amsterdam vs Jakarta

Atlanta

Atlanta vs London

Auckland

Auckland vs London Auckland vs New York Auckland vs Sydney Auckland vs Singapore Auckland vs Tokyo

Berlin

Berlin vs New York Berlin vs Tokyo Berlin vs London Berlin vs Dubai Berlin vs Shanghai Berlin vs Mumbai Berlin vs Singapore Berlin vs Sydney Berlin vs Tokyo Berlin vs Paris Berlin vs Amsterdam Berlin vs Rome Berlin vs Madrid Berlin vs Warsaw Berlin vs Prague Berlin vs Vienna Berlin vs Budapest Berlin vs Stockholm

Bogota

Bogota vs New York Bogota vs Miami

Boston

Boston vs London Boston vs Paris Boston vs Dublin

Brisbane

Brisbane vs Tokyo Brisbane vs London

Buenos Aires

Buenos Aires vs New York Buenos Aires vs London Buenos Aires vs Sao Paulo

Cairo

Cairo vs London Cairo vs New York Cairo vs Dubai Cairo vs Istanbul Cairo vs Riyadh

Calgary

Calgary vs London

Cape Town

Cape Town vs London Cape Town vs New York

Casablanca

Casablanca vs London Casablanca vs Paris

Chicago

Chicago vs London Chicago vs Tokyo Chicago vs Los Angeles Chicago vs New York Chicago vs Paris Chicago vs Shanghai Chicago vs Mumbai Chicago vs Dubai Chicago vs Berlin Chicago vs Amsterdam Chicago vs Seoul Chicago vs Hong Kong

Dallas

Dallas vs London

Denver

Denver vs London

Doha

Doha vs London Doha vs Mumbai Doha vs Singapore

Dublin

Dublin vs Sydney Dublin vs Singapore

Edmonton

Edmonton vs London

Frankfurt

Frankfurt vs Tokyo Frankfurt vs Shanghai Frankfurt vs Singapore Frankfurt vs Mumbai

Honolulu

Honolulu vs Tokyo Honolulu vs New York

Houston

Houston vs London

Istanbul

Istanbul vs London Istanbul vs New York Istanbul vs Dubai Istanbul vs Berlin Istanbul vs Paris Istanbul vs Moscow

Johannesburg

Johannesburg vs London Johannesburg vs New York Johannesburg vs Dubai Johannesburg vs Sydney Johannesburg vs Lagos

Lagos

Lagos vs London Lagos vs New York Lagos vs Dubai

Lima

Lima vs New York Lima vs London

Melbourne

Melbourne vs London Melbourne vs New York Melbourne vs Tokyo Melbourne vs Singapore Melbourne vs Dubai

Mexico City

Mexico City vs London Mexico City vs Tokyo Mexico City vs Madrid

Miami

Miami vs London Miami vs Paris Miami vs Madrid Miami vs Sao Paulo

Montreal

Montreal vs Paris Montreal vs London

Moscow

Moscow vs New York Moscow vs London Moscow vs Berlin Moscow vs Paris Moscow vs Dubai Moscow vs Beijing

Nairobi

Nairobi vs London Nairobi vs Dubai Nairobi vs Mumbai

Nashville

Nashville vs London

Ottawa

Ottawa vs London

Perth

Perth vs London Perth vs Sydney Perth vs Singapore

Philadelphia

Philadelphia vs London

Phoenix

Phoenix vs London

Portland

Portland vs London

Riyadh

Riyadh vs London Riyadh vs Mumbai Riyadh vs Cairo

San Francisco

San Francisco vs London San Francisco vs Tokyo San Francisco vs New York San Francisco vs Sydney San Francisco vs Singapore San Francisco vs Shanghai San Francisco vs Seoul San Francisco vs Mumbai San Francisco vs Berlin San Francisco vs Dublin San Francisco vs Paris San Francisco vs Bangalore

Santiago

Santiago vs New York Santiago vs London

Sao Paulo

Sao Paulo vs London Sao Paulo vs New York Sao Paulo vs Paris

Seattle

Seattle vs London

Seoul

Seoul vs New York Seoul vs London Seoul vs Los Angeles Seoul vs Shanghai Seoul vs Sydney Seoul vs Singapore Seoul vs Bangkok

Shanghai

Shanghai vs New York Shanghai vs London Shanghai vs Tokyo Shanghai vs Sydney Shanghai vs Los Angeles Shanghai vs Seoul

Tel Aviv

Tel Aviv vs New York Tel Aviv vs London Tel Aviv vs Berlin

Toronto

Toronto vs London Toronto vs Tokyo Toronto vs Dubai Toronto vs Vancouver Toronto vs Los Angeles Toronto vs Mumbai Toronto vs Paris Toronto vs Sydney

Vancouver

Vancouver vs London Vancouver vs Tokyo Vancouver vs Sydney

Washington DC

Washington DC vs London

Zurich

Zurich vs Singapore Zurich vs Tokyo

How Time Differences Are Calculated

Every location on Earth is assigned a time zone defined as an offset from Coordinated Universal Time (UTC). The time difference between two cities is simply the gap between their UTC offsets.

For example, New York operates on UTC-5 in winter and UTC-4 in summer, while London uses UTC+0 in winter and UTC+1 in summer. During winter the gap is 5 hours; during summer it stays at 5 hours because both shift. But during the brief windows when only one city has switched, the gap changes to 4 or 6 hours.

When Time Differences Change

Daylight saving time (DST) is the main reason time differences shift throughout the year. Countries that observe DST "spring forward" (gaining an hour of evening daylight) and "fall back" at different dates. During these transition weeks, the usual time difference between two cities can be off by one hour from what you expect.

Edge Cases: Unusual Offsets

Not all time zones follow whole-hour offsets. India uses UTC+5:30, Nepal uses UTC+5:45, and Iran uses UTC+3:30. When one city is on a half-hour offset, the time difference will include 30 or 45 minutes, making conversion less intuitive. Our calculator handles these automatically.

Tips for Working Across Time Zones

Related Tools

You can also check today's date in any country on DateToday.info or view a global live clock at WorldWideClock.com.