Country size comparison

compared to

San Diego is about 30 times bigger than Macau.

Macau is approximately 28 sq km, while San Diego is approximately 844 sq km, making San Diego 2,893% larger than Macau.
Tip: This to-scale comparison of Macau 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. Macau
Flip Comparison · See true size
See San Diego on top of Macau
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Cost of Living Comparison · 7 categories - 2026 data
Macau is 29.5% cheaper than San Diego
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