Shanghai is about 35 times bigger than San Jose.

San Jose is approximately 180 sq km, while Shanghai is approximately 6,341 sq km, making Shanghai 3,423% larger than San Jose.
Tip: This to-scale comparison of San Jose vs. Shanghai 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.