Hong Kong is about 18 times bigger than British Indian Ocean Territory.

British Indian Ocean Territory is approximately 60 sq km, while Hong Kong is approximately 1,108 sq km, making Hong Kong 1,747% larger than British Indian Ocean Territory. Meanwhile, the population of British Indian Ocean Territory is ~3,000 people (7.5 million more people live in Hong Kong).
Tip: This to-scale comparison of British Indian Ocean Territory vs. Hong Kong uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Hong Kong vs. British Indian Ocean Territory

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