City size comparison

compared to

Rio De Janeiro is about 10 times bigger than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Rio De Janeiro is approximately 1,221 sq km, making Rio De Janeiro 909% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Rio De Janeiro uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Rio De Janeiro vs. San Francisco

Flip Comparison · See true size
See Rio De Janeiro on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 3.3 times more expensive than Rio De Janeiro
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