City size comparison

compared to

Barcelona is about 16 times smaller than London.

London (including the 32 boroughs of greater London) is approximately 1,572 sq km, while Barcelona is approximately 101 sq km, making Barcelona 6.44% the size of London.
Tip: This to-scale comparison of London vs. Barcelona uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Barcelona vs. London

Flip Comparison · See true size
See Barcelona on top of London
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Cost of Living Comparison · 7 categories - 2026 data
London is 81.3% more expensive than Barcelona
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