Swaziland is about 22 times smaller than Japan.

Japan is approximately 377,915 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 4.59% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (123.1 million fewer people live in Swaziland).
This to-scale comparison of Japan vs. Swaziland uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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