Buenos Aires
203 km²
London
1,572 km²
Argentina
UK
Area Comparison
Buenos Aires is 7.7x smaller than London
Population Comparison
Buenos Aires has 2.9x fewer people than London
Yes — London is 7.7x larger than Buenos Aires by area. London spans 1,572 km² (607 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 1,369 km². You could fit Buenos Aires inside London approximately 7 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, London at 1,572 km² is about 1.4x smaller than Tokyo (city proper).
Picture Buenos Aires another way: its area is large enough to fit about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park. London, by comparison, equals about 220,000 American football fields, 27 times the area of Manhattan, or 15 times the area of Paris.
Buenos Aires, officially the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area has a population of 16.7 million, making it the 21st most populous metropolitan area in the world.
Known as "Paris of South America", Buenos Aires covers 203 km² with a population of 3.1 million. The city was established in 1536. Buenos Aires is known for La Boca's Caminito, Recoleta Cemetery, Teatro Colón, among other attractions. The city's main transit system is the Buenos Aires Subte.
Buenos Aires is classified as an Alpha− global city according to the GaWC 2024 ranking.
London is the capital and largest city of England and the United Kingdom, with a population of 9.1 million people in 2024. Its wider metropolitan area is the largest in Western Europe, with a population of 15.1 million. London stands on the River Thames in southeast England, at the head of a 50-mile (80 km) tidal estuary down to the North Sea, and has been a major settlement for nearly 2,000 years.
Also known as "The Big Smoke", London has an area of 1,572 km² and is home to 9.0 million people. Its history stretches back to 43. Visitors come for Big Ben, Tower Bridge, Buckingham Palace, and much more. Getting around is easy with the London Underground.
London has been a major settlement for nearly 2,000 years, tracing its roots back to Roman times around 47 AD.
Looking beyond city limits, the London metropolitan area covers 8,382 km², which is 1.8x larger than greater Buenos Aires at 4,758 km². The Buenos Aires metro area is also more populous, with 15.2 million people compared to 14.3 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. London, with 5,712 people per km², is a densely populated city. Buenos Aires is noticeably denser, packing 2.6 times more people per square kilometer.
This comparison spans continents — Buenos Aires in South America versus London in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Buenos Aires has a humid subtropical climate while London experiences oceanic conditions. When it's noon in London, it's 9:00 AM in Buenos Aires — a 3-hour time difference.
Size Ratio
Buenos Aires fits inside London ~7 times
Density Gap
Buenos Aires is 2.6x more densely populated
Time Difference
3 hours apart
History
London is ~1,493 years older
Buenos Aires covers 203 km². Cities with a similar urban footprint include Helsinki (214 km²), Amsterdam (219 km²), Stockholm (188 km²), Osaka (225 km²), or Boston (232 km²).
London covers 1,572 km². Cities with a similar urban footprint include Bangkok (1,569 km²), Bogotá (1,578 km²), São Paulo (1,521 km²), Johannesburg (1,644 km²), or Mexico City (1,485 km²).
The straight-line distance from Buenos Aires to London is 11,128 km (6,914 miles), with an estimated flight time of ~13h 35m.
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