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

British Indian Ocean Territory is approximately 60 sq km, while Nauru is approximately 21 sq km, making Nauru 35.0% the size of British Indian Ocean Territory. Meanwhile, the population of British Indian Ocean Territory is ~3,000 people (9,025 more people live in Nauru).
Tip: This to-scale comparison of British Indian Ocean Territory vs. Nauru uses the Mercator projection, which distorts the size of regions near the poles.
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