British Indian Ocean Territory is about 2.9 times bigger than Nauru.

Nauru is approximately 21 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 186% larger than Nauru. Meanwhile, the population of Nauru is ~12,025 people (9,025 fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Nauru vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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