Heard Island and McDonald Islands is about 49 times smaller than Massachusetts.

Massachusetts is approximately 20,306 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 2.03% the size of Massachusetts.
Tip: This to-scale comparison of Massachusetts vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Heard Island and McDonald Islands vs. Massachusetts

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