City size comparison

compared to

Shanghai is about 10 times bigger than Seoul.

Seoul is approximately 605 sq km, while Shanghai is approximately 6,341 sq km, making Shanghai 948% larger than Seoul.
Tip: This to-scale comparison of Seoul vs. Shanghai uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Shanghai vs. Seoul

Flip Comparison · See true size
See Shanghai on top of Seoul
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Cost of Living Comparison · 7 categories - 2026 data
Seoul is 43.7% more expensive than Shanghai
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