Beijing
16,411 km²
Buenos Aires
203 km²
China
Argentina
Area Comparison
Beijing is 80.8x larger than Buenos Aires
Population Comparison
Beijing has 7.0x more people than Buenos Aires
In terms of area, Beijing is 80.8x the size of Buenos Aires. Beijing spans 16,411 km² (6,336 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 16,208 km². You could fit Buenos Aires inside Beijing approximately 80 times.
To put Beijing's size in perspective, its area of 16,411 km² is about 2.6x the size of Shanghai. Meanwhile, Buenos Aires at 203 km² is roughly the same size as Amsterdam.
Picture Beijing another way: its area is large enough to fit about 2,300,000 American football fields, 160 times the area of Paris, or 140 times the area of San Francisco. For Buenos Aires, that's about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park.
Beijing, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's most populous national capital city, as well as China's second-largest city by urban area, after Shanghai. It is located in Northern China, and is governed as a municipality under the direct administration of the State Council with 16 urban districts.
Known as "Northern Capital", Beijing covers 16,411 km² with a population of 21.5 million. The city was founded around 1045 BC. Beijing is known for Forbidden City, Great Wall, Tiananmen Square, among other attractions. The city's main transit system is the Beijing Subway.
With over 22 million residents, Beijing is the world's most populous national capital city.
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.
Nicknamed "Paris of South America", Buenos Aires has an area of 203 km² and is home to 3.1 million people. Its history stretches back to 1536. Visitors come for La Boca's Caminito, Recoleta Cemetery, Teatro Colón, and much more. Getting around is easy with the Buenos Aires Subte.
Buenos Aires is classified as an Alpha− global city according to the GaWC 2024 ranking.
Looking beyond city limits, the Beijing metropolitan area covers 16,411 km², which is 3.4x larger than greater Buenos Aires at 4,758 km². The Beijing metro area is also more populous, with 21.5 million people compared to 15.2 million.
Beijing has a population density of 1,313 people per km² — a relatively spread-out city. Buenos Aires, with 15,074 people per km², is an extremely dense urban environment. Buenos Aires is dramatically more crowded, with 11.5x the population density.
This comparison spans continents — Beijing in Asia versus Buenos Aires in South America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Beijing has a humid continental climate while Buenos Aires experiences humid subtropical conditions. When it's noon in Beijing, it's 1:00 AM in Buenos Aires — a 11-hour time difference.
Size Ratio
Buenos Aires fits inside Beijing ~80 times
Density Gap
Buenos Aires is 11.5x more densely populated
Time Difference
11 hours apart
History
Beijing is ~2,581 years older
Beijing covers 16,411 km². Cities with a similar urban footprint include Hangzhou (16,854 km²), Brisbane (15,826 km²), Chengdu (14,378 km²), Sydney (12,368 km²), or Xi'an (10,097 km²).
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).
The straight-line distance from Beijing to Buenos Aires is 19,267 km (11,972 miles), with an estimated flight time of ~23h 10m.
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