City size comparison
compared to
London is about 13 times bigger than San Francisco.
San Francisco (including the city proper only) is approximately 121 sq km, while London (including the 32 boroughs of greater London) is approximately 1,572 sq km, making London 1,199% larger than San Francisco.
This to-scale comparison of
San Francisco
vs.
London
uses the Mercator projection, which distorts the size of regions near the poles. Learn more.
Note: Try dragging the outline to reposition.