Is Tokyo Bigger Than London?

Tokyo and London are two of the most consequential cities on Earth — economic powerhouses, cultural exporters, and crossroads of global commerce. But which one is actually bigger? Tokyo wins by a wide margin on virtually every measure of size, but London punches above its weight in influence.

The Short Answer

Yes, Tokyo is much bigger than London. Greater Tokyo has about 37.4 million people in its metropolitan area. The London metro area has about 14 million. Tokyo is roughly 2.7 times more populous. By land area, Greater Tokyo covers about 13,500 km² compared to the London metro area's 8,382 km², making Tokyo roughly 60% larger geographically.

Side-by-Side Numbers

• Tokyo metro area population: ~37.4 million
• London metro area population: ~14 million
• Tokyo metro area: ~13,500 km²
• London metro area: ~8,382 km²
• Tokyo city proper: ~13.96 million people
• London city proper: ~9 million people

Tokyo

Tokyo is the capital of Japan and the largest metropolitan area in the world by population. "Tokyo" can refer to several things: Tokyo Metropolis (Tōkyō-to), which has 13.96 million people and includes 23 special wards plus suburbs; the Greater Tokyo Area, which includes neighboring prefectures (Saitama, Kanagawa, Chiba) and has 37.4 million; or the wider Tokyo-Yokohama region. The city sits at the head of Tokyo Bay on the Pacific coast of Honshu, Japan's main island.

Tokyo became Japan's capital in 1868 when Emperor Meiji moved his court from Kyoto. The city was devastated by the Great Kantō earthquake of 1923 (which killed over 140,000 people) and again by Allied firebombing during World War II. The post-war reconstruction made Tokyo the economic engine of Japan's "economic miracle." Today the city is famous for its efficient public transit (the Tokyo Metro carries about 8 million passengers per day), its blend of ultramodern and traditional architecture, and its enormous concentration of corporations, retail, and culture.

London

London is the capital of the United Kingdom and one of the world's most influential cities. "London" can refer to: the City of London (the historic 2.9 km² square mile that hosts the financial district, with only 9,000 residents); Greater London (the administrative region of 8,382 km² with about 9 million people); or the broader London metropolitan area (about 14 million people). The city sits on the River Thames in southeast England.

London has been a major city since Roman times (Londinium was founded around 47 CE). It became the capital of England under the Normans, grew into the heart of the British Empire (the largest empire in history at its peak), and survived devastating events like the Great Fire of 1666, the Blitz during WWII, and the IRA terrorism era. Today London is one of the world's premier financial centers (alongside New York and increasingly Singapore and Hong Kong), a major cultural and educational hub, and one of the most ethnically diverse major cities.

Population Comparison

Tokyo's metro area is the largest in the world. The Greater Tokyo Area's 37.4 million people exceed the populations of most countries — it would be the 38th largest country in the world if it were a country. London's 14 million metro area, while large, ranks roughly 30th globally and is dwarfed by Asian megacities like Delhi, Shanghai, São Paulo, Mumbai, and Beijing. London city proper has about 9 million people compared to Tokyo Metropolis' 13.96 million.

Economy

Tokyo has one of the largest urban economies in the world. The Greater Tokyo Area has an estimated GDP of about $2 trillion — larger than the GDP of countries like Italy or Canada. Tokyo is home to many of Japan's largest corporations (Toyota, Sony, Mitsubishi, Honda, NTT, Softbank) and one of the world's largest stock exchanges. The Tokyo Stock Exchange has roughly $6 trillion in market capitalization.

London is the financial heart of Europe and one of the top global financial centers. The City of London (the "Square Mile") concentrates banking and financial services on a scale rivaled only by Wall Street. London's metro GDP is about $850 billion. Major industries include finance, professional services, technology, the creative industries (film, TV, music, publishing), and tourism. London Heathrow is one of the world's busiest international airports.

Transportation

Tokyo's public transit is legendary. The Tokyo Metro and Toei Subway systems together carry about 8 million passengers per day. The Yamanote Line, a circular train route looping the central city, is one of the busiest train lines in the world. Combined with the JR (Japan Railways) lines and dozens of private railway companies, the Tokyo region has one of the most extensive rail networks on Earth. Tokyo Station and Shinjuku Station (the busiest train station in the world by passenger count) are major hubs. The Tokyo Shinkansen (bullet train) network connects the city to other regions of Japan.

London's public transit is also extensive but operates on a smaller scale. The London Underground ("the Tube"), opened in 1863, is the oldest subway system in the world. It carries about 4 million passengers per day across 11 lines. London also has extensive bus networks, the Overground commuter rail, the Docklands Light Railway, and the new Elizabeth Line (Crossrail), which opened in 2022. London's six international airports (Heathrow, Gatwick, Stansted, Luton, City, and Southend) make it one of the most-connected cities globally.

Diversity

London is one of the most ethnically and linguistically diverse cities in the world. About 37% of London residents were born outside the UK. Over 300 languages are spoken in the city. Major communities include White British, South Asian (Indian, Pakistani, Bangladeshi), Black African and Caribbean, Eastern European, Chinese, and Middle Eastern, among many others. Tokyo is, by contrast, ethnically homogeneous — about 98% of Tokyo residents are Japanese. Foreign residents make up about 4% of the population, mostly from China, Korea, Vietnam, and the Philippines. This is changing slowly as Japan opens up to immigration, but Tokyo remains far less diverse than London.

Culture

Both cities are major cultural hubs. London is famous for its museums (the British Museum, Tate Modern, National Gallery, V&A), its theaters (West End), its music scene (one of the world's most influential), and its iconic landmarks (Tower Bridge, Big Ben, Buckingham Palace). Tokyo offers a different but equally rich cultural landscape: the imperial palace, ancient temples like Sensō-ji in Asakusa, modern shopping districts like Shibuya and Ginza, the anime/manga district of Akihabara, and unique subcultures from Harajuku fashion to maid cafés. Both cities have more Michelin-starred restaurants than nearly anywhere else — Tokyo has more than any other city in the world.

Cost of Living and Quality of Life

Both Tokyo and London consistently rank among the world's most expensive cities, though Tokyo has become relatively cheaper in recent years as the yen has weakened. Average rents in central Tokyo are now lower than central London. Both have excellent public services, healthcare, and education. Quality-of-life rankings consistently place both cities in the top tier of major global cities, though Tokyo typically ranks higher for safety and London for cultural diversity.

Disasters and Resilience

Tokyo sits on the convergence of multiple tectonic plates and is one of the most earthquake-prone major cities on Earth. The Great Kantō earthquake of 1923 killed over 140,000 people and destroyed much of the city; the threat of a future "Big One" remains real. Building codes are among the strictest in the world, and disaster preparedness is woven into civic life. London faces different threats. Major floods (the Thames Barrier, completed 1982, is one of the world's largest movable flood barriers), terrorism (the 2005 Tube bombings), and climate-related risks like heat waves (the 2003 heat wave killed over 600 people in London) are the main hazards. London is generally less subject to natural disasters than Tokyo.

Higher Education

Both cities are major higher education hubs. London is home to many of the world's top universities — Imperial College, UCL, King's College London, LSE, and many others. The city has over 400,000 university students, more than any other European city. Tokyo has dozens of major universities, including the University of Tokyo (Todai), Waseda, Keio, Hitotsubashi, and Tokyo Institute of Technology. The University of Tokyo is consistently ranked as Asia's top university and is one of the most selective in the world.

Key Facts

• Tokyo is about 2.7× more populous than London (metro area).
• Tokyo is the largest metro area in the world.
• London is one of the world's top three financial centers.
• Tokyo Station/Shinjuku has the world's busiest train station passenger count.
• London has the world's oldest subway system.

Fun Facts

• The Tokyo Metro system carries 8 million riders daily.
• London has more parks than any other major global city.
• Tokyo has zero earthquakes some days and 5+ on others.
• London is home to over 300 spoken languages.
• Tokyo Metro's Shinjuku Station serves over 3.5 million people per day.

The Bottom Line

Tokyo is significantly bigger than London — about 2.7 times more populous in metro terms. But London punches well above its weight in cultural diversity, financial influence, and global political prominence. Tokyo dominates in scale, efficiency, and demographic mass; London dominates in cosmopolitan diversity, soft-power reach, and its global position as the English-speaking world's European financial center. Both will continue to shape the 21st century in their own distinctive ways.