San Francisco is about 6 times smaller than Edmonton.

Edmonton is approximately 768 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 15.76% the size of Edmonton.
Tip: This to-scale comparison of Edmonton 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.