Montreal is about 2.4 times bigger than San Jose.

San Jose is approximately 180 sq km, while Montreal is approximately 432 sq km, making Montreal 140% larger than San Jose.
Tip: This to-scale comparison of San Jose vs. Montreal 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.