Shanghai is about 107 times bigger than Pasadena.

Pasadena is approximately 59 sq km, while Shanghai is approximately 6,341 sq km, making Shanghai 10,563% larger than Pasadena.
Tip: This to-scale comparison of Pasadena 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.