Rio de Janeiro
1,221 km²
Vienna
415 km²
Brazil
Austria
Area Comparison
Rio de Janeiro is 2.9x larger than Vienna
Population Comparison
Rio de Janeiro has 3.4x more people than Vienna
In terms of area, Rio de Janeiro is 2.9x the size of Vienna. Rio de Janeiro spans 1,221 km² (471 mi²) while Vienna covers 415 km² (160 mi²) — a difference of 806 km². You could fit Vienna inside Rio de Janeiro approximately 2 times.
To put Rio de Janeiro's size in perspective, its area of 1,221 km² is about 1.3x smaller than London. Meanwhile, Vienna at 415 km² is about 1.5x smaller than Seoul.
Rio de Janeiro's footprint is roughly about 171,000 American football fields, 21 times the area of Manhattan, or 12 times the area of Paris — pick whichever unit feels intuitive. Vienna works out to about 58,000 American football fields, 120 times the area of Central Park, or 7 times the area of Manhattan.
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.
Known as "Cidade Maravilhosa", 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, Sugarloaf Mountain, Copacabana beach, among other attractions. The city's main transit system is the MetrôRio.
Rio de Janeiro is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous in the Americas.
Vienna is the capital, most populous city, and one of the nine states of Austria. It is Austria's primate city, with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the cultural, economic, and political centre of the country, the fifth-largest city by population in the European Union, and the most populous of the cities on the river Danube.
Often called "City of Music", Vienna has an area of 415 km² and is home to 2.0 million people. Its history stretches back to 500 BC. Visitors come for Schönbrunn Palace, St. Stephen's Cathedral, Hofburg Palace, and much more. Getting around is easy with the Wiener Linien (U-Bahn).
Vienna's metropolitan area holds nearly 2.9 million people, representing roughly one-third of Austria's entire population
Looking beyond city limits, the Rio de Janeiro metropolitan area covers 6,744 km², which is 1.8x larger than greater Vienna at 3,840 km². The Rio de Janeiro metro area is also more populous, with 13.5 million people compared to 2.8 million.
Rio de Janeiro has a population density of 5,528 people per km² — a densely populated city. Vienna, with 4,771 people per km², is a moderately dense city. Both cities have comparable density, though Rio de Janeiro is slightly more compact.
This comparison spans continents — Rio de Janeiro in South America versus Vienna in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Rio de Janeiro has a tropical savanna climate while Vienna experiences oceanic conditions. Winters differ dramatically: Rio de Janeiro stays around 21°C while Vienna drops to 1°C. When it's noon in Vienna, it's 8:00 AM in Rio de Janeiro — a 4-hour time difference.
Size Ratio
Vienna fits inside Rio de Janeiro ~2 times
Time Difference
4 hours apart
History
Vienna is ~2,065 years older
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).
Vienna covers 415 km². Cities with a similar urban footprint include Denver (401 km²), Oslo (454 km²), Portland (376 km²), Philadelphia (370 km²), or Seattle (369 km²).
The straight-line distance from Rio de Janeiro to Vienna is 9,874 km (6,136 miles), with an estimated flight time of ~12h 7m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.