City size comparison

compared to

Johannesburg is about 2.7 times bigger than Seoul.

Seoul is approximately 605 sq km, while Johannesburg is approximately 1,644 sq km, making Johannesburg 172% larger than Seoul.
Tip: This to-scale comparison of Seoul vs. Johannesburg uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Johannesburg vs. Seoul

Flip Comparison · See true size
See Johannesburg on top of Seoul
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Cost of Living Comparison · 7 categories - 2026 data
Seoul is 38.8% more expensive than Johannesburg
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