City size comparison

compared to

Turku is about 2 times bigger than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Turku is approximately 246 sq km, making Turku 103% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Turku uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Turku vs. San Francisco

Flip Comparison · See true size
See Turku on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 2.9 times more expensive than Turku
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