Heard Island and McDonald Islands is about 100 times smaller than Switzerland.

Switzerland is approximately 41,277 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 1.0% the size of Switzerland.
Tip: This to-scale comparison of Switzerland 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. Switzerland

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