City size comparison

compared to

Copenhagen is about 3.4 times bigger than Sydney.

Sydney is approximately 27 sq km, while Copenhagen is approximately 90 sq km, making Copenhagen 237% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Copenhagen uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Copenhagen vs. Sydney
Flip Comparison · See true size
See Copenhagen on top of Sydney
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Cost of Living Comparison · 7 categories - 2026 data
Sydney is 6.8% more expensive than Copenhagen
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