City size comparison

compared to

San Francisco is about 3.8 times smaller than Oslo.

Oslo is approximately 454 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 26.64% the size of Oslo.
Tip: This to-scale comparison of Oslo 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. Oslo

Flip Comparison · See true size
See San Francisco on top of Oslo
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Cost of Living Comparison · 7 categories - 2026 data
Oslo is 9.4% cheaper than San Francisco
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