Swaziland is about 289 times bigger than British Indian Ocean Territory.

British Indian Ocean Territory is approximately 60 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 28,840% larger than British Indian Ocean Territory. Meanwhile, the population of British Indian Ocean Territory is ~3,000 people (1.3 million more people live in Swaziland).
Tip: This to-scale comparison of British Indian Ocean Territory vs. Swaziland uses the Mercator projection, which distorts the size of regions near the poles.

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