City size comparison

compared to

Barcelona is about 1.2 times smaller than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Barcelona is approximately 101 sq km, making Barcelona 83.72% the size of San Francisco.
Tip: This to-scale comparison of San Francisco vs. Barcelona uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Barcelona vs. San Francisco

Flip Comparison · See true size
See Barcelona on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 85.4% more expensive than Barcelona
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