City size comparison

compared to

San Francisco is about 1.2 times bigger than Barcelona.

Barcelona is approximately 101 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 19% larger than Barcelona.
Tip: This to-scale comparison of Barcelona 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. Barcelona

Flip Comparison · See true size
See San Francisco on top of Barcelona
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Cost of Living Comparison · 7 categories - 2026 data
Barcelona is 32.3% cheaper than San Francisco
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