City size comparison

compared to

Cologne is about 13 times smaller than Istanbul.

Istanbul is approximately 5,343 sq km, while Cologne is approximately 405 sq km, making Cologne 7.58% the size of Istanbul.
Tip: This to-scale comparison of Istanbul vs. Cologne uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Cologne vs. Istanbul

Flip Comparison · See true size
See Cologne on top of Istanbul
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Cost of Living Comparison · 7 categories - 2026 data
Istanbul is 29.6% cheaper than Cologne
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