British Indian Ocean Territory is about 36,101 times smaller than Greenland.

Greenland is approximately 2,166,086 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 0.0% the size of Greenland. Meanwhile, the population of Greenland is ~56,831 people (53,831 fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Greenland vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: British Indian Ocean Territory vs. Greenland

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