British Indian Ocean Territory is about 338 times smaller than Massachusetts.

Massachusetts is approximately 20,306 sq km, while British Indian Ocean Territory is approximately 60 sq km, making British Indian Ocean Territory 0.3% the size of Massachusetts.
Tip: This to-scale comparison of Massachusetts 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. Massachusetts

Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.