Zurich is about 17 times smaller than Sao Paulo.

Sao Paulo is approximately 1,523 sq km, while Zurich is approximately 88 sq km, making Zurich 5.77% the size of Sao Paulo.
Tip: This to-scale comparison of Sao Paulo vs. Zurich uses the Mercator projection, which distorts the size of regions near the poles.
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