City size comparison

compared to

Seoul is about 23 times bigger than Sydney.

Sydney is approximately 27 sq km, while Seoul is approximately 605 sq km, making Seoul 2,167% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Seoul uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Seoul vs. Sydney

Flip Comparison · See true size
See Seoul on top of Sydney
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Cost of Living Comparison · 7 categories - 2026 data
Sydney is 2.1 times more expensive than Seoul
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