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Brazil
Iran
Area Comparison
Rio de Janeiro is 1.7x larger than Tehran
Population Comparison
Rio de Janeiro has 1.4x fewer people than Tehran
Yes — Rio de Janeiro is 1.7x larger than Tehran by area. Rio de Janeiro spans 1,221 km² (471 mi²) while Tehran covers 730 km² (282 mi²) — a difference of 491 km².
To put Rio de Janeiro's size in perspective, its area of 1,221 km² is about 1.3x smaller than London. Meanwhile, Tehran at 730 km² is roughly the same size as New York City.
Brazil's iconic coastal city known for Carnival. Known as "The Marvelous City", Rio de Janeiro covers 1,221 km² with a population of 6.8 million. The city was established in 1565. Rio de Janeiro is known for Christ the Redeemer, Copacabana Beach, Carnival, among other attractions. The city's main transit system is the MetrôRio.
Rio's Christ the Redeemer statue is struck by lightning an average of 6 times per year
Iran's capital and largest city. Also known as "The City of 72 Nations", Tehran has an area of 730 km² and is home to 9.1 million people. It was established in 1524. Visitors come for Golestan Palace, Grand Bazaar, Milad Tower, and much more. Getting around is easy with the Tehran Metro.
Tehran sits at the foot of Mount Damavand, the highest volcano in Asia at 5,610 meters
Looking beyond city limits, the Rio de Janeiro metropolitan area covers 6,744 km², which is 3.0x larger than greater Tehran at 2,235 km². The Tehran metro area is also more populous, with 16.0 million people compared to 13.5 million.
Rio de Janeiro has a population density of 5,528 people per km² — a densely populated city. Tehran, with 12,507 people per km², is an extremely dense urban environment. Tehran is noticeably denser, packing 2.3 times more people per square kilometer.
This comparison spans continents — Rio de Janeiro in South America versus Tehran in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Rio de Janeiro has a tropical savanna climate while Tehran experiences hot-summer Mediterranean conditions. Winters differ dramatically: Rio de Janeiro stays around 21°C while Tehran drops to 3°C. When it's noon in Tehran, it's 5.5:00 AM in Rio de Janeiro — a 6.5-hour time difference.
Density Gap
Tehran is 2.3x more densely populated
Time Difference
6.5 hours apart
The straight-line distance from Rio de Janeiro to Tehran is 11,859 km (7,369 miles), with an estimated flight time of ~14h 27m. See full distance details, including timezone difference and city facts.
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