British Indian Ocean Territory is about 1.3 times smaller than Guernsey.

Guernsey is approximately 78 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 76.92% the size of Guernsey. Meanwhile, the population of Guernsey is ~67,491 people (64,491 fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Guernsey vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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