Lake Michigan is about 1.2 times smaller than Tasmania.

Tasmania is approximately 68,401 km² (26,410 sq mi), while Lake Michigan is approximately 57,750 km² (22,297 sq mi), making Lake Michigan 84.43% the size of Tasmania.
Tip: This to-scale comparison of Tasmania vs. Lake Michigan uses the Mercator projection, which distorts the size of regions near the poles.
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