Miami
143 km²
Rio de Janeiro
1,221 km²
USA
Brazil
Area Comparison
Miami is 8.5x smaller than Rio de Janeiro
Population Comparison
Miami has 15.3x fewer people than Rio de Janeiro
In terms of area, Rio de Janeiro is 8.5x the size of Miami. Rio de Janeiro spans 1,221 km² (471 mi²) while Miami covers 143 km² (55 mi²) — a difference of 1,078 km². You could fit Miami inside Rio de Janeiro approximately 8 times.
To put Miami's size in perspective, its area of 143 km² is about 1.2x the size of San Francisco. Meanwhile, Rio de Janeiro at 1,221 km² is about 1.3x smaller than London.
In more relatable units, Miami's 143 km² is about 20,000 American football fields, 71 times the area of Monaco, or 42 times the area of Central Park. For Rio de Janeiro, that's about 171,000 American football fields, 21 times the area of Manhattan, or 12 times the area of Paris.
Miami is a coastal city in the U.S. state of Florida. It is the second-most populous city proper in Florida, with a population of 442,241 at the 2020 census. The Miami metropolitan area in South Florida has an estimated 6.39 million residents, ranking as the fifth-largest metropolitan area in the Southeast and eighth-largest metropolitan area in the United States. Miami has the third-largest skyline in the U.S. with over 300 high-rises, 70 of which exceed 491 ft (150 m).
Known as "Magic City", Miami covers 143 km² with a population of 0.4 million. The city was established in 1896. Miami is known for South Beach, Art Deco Historic District, Little Havana, among other attractions. The city's main transit system is the Metrorail Miami.
Miami boasts the third-largest skyline in the U.S. with over 300 high-rises, 70 of them topping 491 feet
Rio de Janeiro, also known simply as Rio, is the capital of the state of Rio de Janeiro. It is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous city in the Americas.
Often called "Cidade Maravilhosa", Rio de Janeiro has an area of 1,221 km² and is home to 6.8 million people. The city dates back to 1565. Visitors come for Christ the Redeemer, Sugarloaf Mountain, Copacabana beach, and much more. Getting around is easy with the MetrôRio.
Rio de Janeiro is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous in the Americas.
Looking beyond city limits, the Miami metropolitan area covers 15,890 km², which is 2.4x larger than greater Rio de Janeiro at 6,744 km². The Rio de Janeiro metro area is also more populous, with 13.5 million people compared to 6.2 million.
Miami has a population density of 3,077 people per km² — a moderately dense city. Rio de Janeiro, with 5,528 people per km², is a densely populated city. Rio de Janeiro is noticeably denser, packing 1.8 times more people per square kilometer.
This comparison spans continents — Miami in North America versus Rio de Janeiro in South America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Miami has a tropical monsoon climate while Rio de Janeiro experiences tropical savanna conditions. When it's noon in Rio de Janeiro, it's 10:00 AM in Miami — a 2-hour time difference.
Size Ratio
Miami fits inside Rio de Janeiro ~8 times
Density Gap
Rio de Janeiro is 1.8x more densely populated
History
Rio de Janeiro is ~331 years older
Miami covers 143 km². Cities with a similar urban footprint include Minneapolis (149 km²), Brussels (161 km²), San Francisco (121 km²), Washington D.C. (177 km²), or Vancouver (115 km²).
Rio de Janeiro covers 1,221 km². Cities with a similar urban footprint include San Antonio (1,209 km²), Lagos (1,172 km²), Rome (1,285 km²), Los Angeles (1,302 km²), or Hong Kong (1,114 km²).
The straight-line distance from Miami to Rio de Janeiro is 6,722 km (4,177 miles), with an estimated flight time of ~8h 24m.
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