Equatorial Guinea is about 2 times bigger than Montenegro.

Montenegro is approximately 13,812 sq km, while Equatorial Guinea is approximately 28,051 sq km, making Equatorial Guinea 103% larger than Montenegro. Meanwhile, the population of Montenegro is ~604,966 people (1.1 million more people live in Equatorial Guinea).
Tip: This to-scale comparison of Montenegro vs. Equatorial Guinea 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.