Pennsylvania is about 282 times bigger than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Pennsylvania is approximately 116,075 sq km, making Pennsylvania 28,074% larger than Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Pennsylvania uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Pennsylvania vs. Heard Island and McDonald Islands

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