Japan is about 1.7 times smaller than Afghanistan.

Afghanistan is approximately 652,230 sq km, while Japan is approximately 377,915 sq km, making Japan 57.94% the size of Afghanistan. Meanwhile, the population of Afghanistan is ~38.3 million people (85.9 million more people live in Japan).
This to-scale comparison of Afghanistan vs. Japan uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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