Amsterdam is about 2.6 times smaller than Montreal.

Montreal is approximately 432 sq km, while Amsterdam is approximately 166 sq km, making Amsterdam 38.41% the size of Montreal.
Tip: This to-scale comparison of Montreal vs. Amsterdam 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.