Montana is about 1.3 times bigger than Ecuador.

Ecuador is approximately 283,561 sq km, while Montana is approximately 376,979 sq km, making Montana 33% larger than Ecuador. Meanwhile, the population of Ecuador is ~18.3 million people (17.1 million fewer people live in Montana).
Tip: This to-scale comparison of Ecuador 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.