City size comparison

compared to

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

Rio De Janeiro is approximately 1,221 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 9.91% the size of Rio De Janeiro.
Tip: This to-scale comparison of Rio De Janeiro vs. San Francisco uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Francisco vs. Rio De Janeiro

Flip Comparison · See true size
See San Francisco on top of Rio De Janeiro
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Cost of Living Comparison · 7 categories - 2026 data
Rio De Janeiro is 60.5% cheaper than San Francisco
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