Heard Island and McDonald Islands is about 731 times smaller than Italy.

Italy is approximately 301,340 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 0.14% the size of Italy.
Tip: This to-scale comparison of Italy vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.