Swaziland is about 18 times smaller than Oman.

Oman is approximately 309,500 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 5.61% the size of Oman. Meanwhile, the population of Oman is ~3.8 million people (2.6 million fewer people live in Swaziland).
This to-scale comparison of Oman vs. Swaziland uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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