Japan is about 2.9 times bigger than Greece.

Greece is approximately 131,957 sq km, while Japan is approximately 377,915 sq km, making Japan 186% larger than Greece. Meanwhile, the population of Greece is ~10.5 million people (113.7 million more people live in Japan).
This to-scale comparison of Greece vs. Japan uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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