Buenos Aires
203 km²
Shanghai
6,341 km²
Argentina
China
Area Comparison
Buenos Aires is 31.2x smaller than Shanghai
Population Comparison
Buenos Aires has 8.1x fewer people than Shanghai
Yes — Shanghai is 31.2x larger than Buenos Aires by area. Shanghai spans 6,341 km² (2,448 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 6,138 km². You could fit Buenos Aires inside Shanghai approximately 31 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Shanghai at 6,341 km² is about 1.5x the size of Los Angeles metro.
In more relatable units, Buenos Aires's 203 km² is about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park. Shanghai works out to about 888,000 American football fields, 110 times the area of Manhattan, or 60 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.
Shanghai is a direct-administered municipality and the most populous urban area in China. It has a population of 29,558,908 in the urban area as of 2025. The city is located on the Chinese shoreline on the southern estuary of the Yangtze River, with the Huangpu River bisecting the city. Shanghai is a global center for finance, business and economics, research, science and technology, manufacturing, transportation, tourism, and culture. The Port of Shanghai is the world's busiest container port.
Nicknamed "Pearl of the Orient", Shanghai has an area of 6,341 km² and is home to 24.9 million people. It was established in 1291. Visitors come for The Bund, Oriental Pearl Tower, Shanghai Tower, and much more. Getting around is easy with the Shanghai Metro.
Shanghai's urban population reached 29.5 million in 2025, making it the most populous urban area in all of China.
Looking beyond city limits, the Shanghai metropolitan area covers 6,341 km², which is 1.3x larger than greater Buenos Aires at 4,758 km². The Shanghai metro area is also more populous, with 28.5 million people compared to 15.2 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. Shanghai, with 3,922 people per km², is a moderately dense city. Buenos Aires is dramatically more crowded, with 3.8x the population density.
This comparison spans continents — Buenos Aires in South America versus Shanghai in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Both cities share a humid subtropical climate, though local geography creates distinct microclimates in each. When it's noon in Shanghai, it's 1:00 AM in Buenos Aires — a 11-hour time difference.
Size Ratio
Buenos Aires fits inside Shanghai ~31 times
Density Gap
Buenos Aires is 3.8x more densely populated
Time Difference
11 hours apart
History
Shanghai is ~245 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).
Shanghai covers 6,341 km². Cities with a similar urban footprint include Perth (6,417 km²), Istanbul (5,461 km²), Guangzhou (7,434 km²), Wuhan (8,569 km²), or Dubai (4,114 km²).
The straight-line distance from Buenos Aires to Shanghai is 19,640 km (12,204 miles), with an estimated flight time of ~23h 36m.
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