Montana is about 27 times smaller than Europe.

Europe is approximately 10,180,000 sq km, while Montana is approximately 376,979 sq km, making Montana 3.7% the size of Europe.
Tip: This to-scale comparison of Europe vs. Montana 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.