Guam is about 695 times smaller than Japan.

Japan is approximately 377,915 sq km, while Guam is approximately 544 sq km, making Guam 0.14% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (124.0 million fewer people live in Guam).
This to-scale comparison of Japan vs. Guam uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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