British Indian Ocean Territory is about 159,949 times smaller than China.

China is approximately 9,596,960 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 0.0% the size of China. Meanwhile, the population of China is ~1.4 billion people (1.4 billion fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of China vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.
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