Japan is about 4.7 times bigger than Maine.

Maine is approximately 79,931 sq km, while Japan is approximately 377,915 sq km, making Japan 373% larger than Maine. Meanwhile, the population of Maine is ~1.3 million people (122.9 million more people live in Japan).
Tip: This to-scale comparison of Maine vs. Japan uses the Mercator projection, which distorts the size of regions near the poles.
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