Country size comparison
compared to
Greenland is about 1.7 times bigger than Chad.
Chad is approximately 1,284,000 sq km, while Greenland is approximately 2,166,086 sq km, making Greenland 69% larger than Chad. Meanwhile, the population of Chad is ~18.0 million people (17.9 million fewer people live in Greenland).
Compare further: Greenland vs. Chad