British Indian Ocean Territory is about 509 times smaller than Belgium.

Belgium is approximately 30,528 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 0.2% the size of Belgium. Meanwhile, the population of Belgium is ~11.9 million people (11.9 million fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Belgium vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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