City size comparison

compared to

San Francisco is about 11 times smaller than Rome.

Rome is approximately 1,287 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 9.4% the size of Rome.
Tip: This to-scale comparison of Rome 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. Rome

Flip Comparison · See true size
See San Francisco on top of Rome
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Cost of Living Comparison · 7 categories - 2026 data
Rome is 35.3% cheaper than San Francisco
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