British Indian Ocean Territory is about 943 times smaller than Croatia.

Croatia is approximately 56,594 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 0.11% the size of Croatia. Meanwhile, the population of Croatia is ~3.9 million people (3.9 million fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Croatia vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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