British Indian Ocean Territory is about 96 times smaller than Brunei.

Brunei is approximately 5,765 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 1.04% the size of Brunei. Meanwhile, the population of Brunei is ~466,330 people (463,330 fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Brunei vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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