Guinea-Bissau is about 10 times smaller than Japan.

Japan is approximately 377,915 sq km, while Guinea-Bissau is approximately 36,125 sq km, making Guinea-Bissau 9.56% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (122.2 million fewer people live in Guinea-Bissau).
This to-scale comparison of Japan vs. Guinea-Bissau uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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