British Indian Ocean Territory is about 3.7 times smaller than American Samoa.

American Samoa is approximately 224 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 26.79% the size of American Samoa.
Tip: This to-scale comparison of American Samoa 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. American Samoa

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