British Indian Ocean Territory is about 8 times smaller than Northern Mariana Islands.

Northern Mariana Islands is approximately 464 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 12.93% the size of Northern Mariana Islands. Meanwhile, the population of Northern Mariana Islands is ~43,541 people (40,541 fewer people live in British Indian Ocean Territory).
Tip: This to-scale comparison of Northern Mariana Islands vs. British Indian Ocean Territory uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: British Indian Ocean Territory vs. Northern Mariana Islands

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