Country size comparison

compared to

San Diego is about 448 times smaller than Japan.

Japan is approximately 377,915 sq km, while San Diego is approximately 844 sq km, making San Diego 0.22% the size of Japan.
Tip: This to-scale comparison of Japan vs. San Diego uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Diego vs. Japan
Flip Comparison · See true size
See San Diego on top of Japan
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Cost of Living Comparison · 7 categories - 2026 data
Japan is 44.2% cheaper than San Diego
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