Cuba is about 20 times smaller than Greenland.

Greenland is approximately 2,166,086 sq km, while Cuba is approximately 110,860 sq km, making Cuba 5.12% the size of Greenland. Meanwhile, the population of Greenland is ~56,831 people (10.9 million more people live in Cuba).
Tip: This to-scale comparison of Greenland vs. Cuba 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.