London is about 1.2 times smaller than Lake Okeechobee.

Lake Okeechobee is approximately 1,890 km² (730 sq mi), while London (including the 32 boroughs of greater London) is approximately 1,572 sq km, making London 83.17% the size of Lake Okeechobee.
Tip: This to-scale comparison of Lake Okeechobee vs. London uses the Mercator projection, which distorts the size of regions near the poles.
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