New Mexico is about 1.2 times smaller than Japan.

Japan is approximately 377,915 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 83.17% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (122.2 million fewer people live in New Mexico).
Tip: This to-scale comparison of Japan vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.
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