Country size comparison

compared to

Australia is about 9,172 times bigger than San Diego.

San Diego is approximately 844 sq km, while Australia is approximately 7,741,220 sq km, making Australia 917,084% larger than San Diego.
Tip: This to-scale comparison of San Diego vs. Australia uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Australia vs. San Diego
Flip Comparison · See true size
See Australia on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 37.3% more expensive than Australia overall
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