City size comparison

compared to

Helsinki is about 2.1 times smaller than Oslo.

Oslo is approximately 454 sq km, while Helsinki is approximately 214 sq km, making Helsinki 47.22% the size of Oslo.
Tip: This to-scale comparison of Oslo vs. Helsinki uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Helsinki vs. Oslo

Flip Comparison · See true size
See Helsinki on top of Oslo
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Cost of Living Comparison · 7 categories - 2026 data
Oslo is 41.2% more expensive than Helsinki
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