Mackinac Island is about 1,030,367 times smaller than United States.

United States is approximately 9,833,517 sq km, while Mackinac Island is approximately 9.54 km² (3.68 sq mi), making Mackinac Island 0.0% the size of United States.
Tip: This to-scale comparison of United States vs. Mackinac Island 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.