Guinea is about 1.5 times smaller than Japan.

Japan is approximately 377,915 sq km, while Guinea is approximately 245,857 sq km, making Guinea 65.06% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (111.0 million fewer people live in Guinea).
This to-scale comparison of Japan vs. Guinea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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