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Vietnam
Brazil
Area Comparison
Hanoi is 2.2x larger than São Paulo
Population Comparison
Hanoi has 1.5x fewer people than São Paulo
Yes — Hanoi is 2.2x larger than São Paulo by area. Hanoi spans 3,359 km² (1,297 mi²) while São Paulo covers 1,521 km² (587 mi²) — a difference of 1,838 km². You could fit São Paulo inside Hanoi approximately 2 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, São Paulo at 1,521 km² is roughly the same size as London.
Vietnam's capital with over a thousand years of history. Known as "The City of the Ascending Dragon", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoàn Kiếm Lake, Old Quarter (36 Streets), Ho Chi Minh Mausoleum, among other attractions. The city's main transit system is the Hanoi Metro.
Hanoi's Old Quarter has been a trading hub for nearly 1,000 years, with each street historically dedicated to a specific trade
Brazil's largest city and financial center. Nicknamed "Sampa", São Paulo has an area of 1,521 km² and is home to 12.3 million people. The city dates back to 1554. Visitors come for Paulista Avenue, Ibirapuera Park, São Paulo Museum of Art, and much more. Getting around is easy with the São Paulo Metro.
São Paulo has the largest Japanese community outside Japan
Looking beyond city limits, the São Paulo metropolitan area covers 7,947 km², which is 2.4x larger than greater Hanoi at 3,359 km². The São Paulo metro area is also more populous, with 22.0 million people compared to 8.1 million.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. São Paulo, with 8,107 people per km², is a densely populated city. São Paulo is dramatically more crowded, with 3.4x the population density.
This comparison spans continents — Hanoi in Asia versus São Paulo in South America. 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 Hanoi, it's 2:00 AM in São Paulo — a 10-hour time difference.
Size Ratio
São Paulo fits inside Hanoi ~2 times
Density Gap
São Paulo is 3.4x more densely populated
Time Difference
10 hours apart
History
Hanoi is ~544 years older
The straight-line distance from Hanoi to São Paulo is 17,173 km (10,671 miles), with an estimated flight time of ~20h 42m. See full distance details, including timezone difference and city facts.
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