San Francisco is about 3.5 times smaller than Wichita.

Wichita (map shows its 73 named neighbourhoods; the area covers the whole city) is approximately 428 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 28.3% the size of Wichita.
Tip: This to-scale comparison of Wichita vs. San Francisco uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.