Shanghai is about 25 times bigger than Sacramento.

Sacramento is approximately 253 sq km, while Shanghai is approximately 6,341 sq km, making Shanghai 2,406% larger than Sacramento.
Tip: This to-scale comparison of Sacramento 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.