Japan is about 1.2 times bigger than New Mexico.

New Mexico is approximately 314,310 sq km, while Japan is approximately 377,915 sq km, making Japan 20% larger than New Mexico. Meanwhile, the population of New Mexico is ~2.1 million people (122.2 million more people live in Japan).
Tip: This to-scale comparison of New Mexico vs. Japan uses the Mercator projection, which distorts the size of regions near the poles.
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