Oman is about 1.6 times smaller than Turkmenistan.

Turkmenistan is approximately 488,100 sq km, while Oman is approximately 309,500 sq km, making Oman 63.41% the size of Turkmenistan. Meanwhile, the population of Turkmenistan is ~5.6 million people (1.9 million fewer people live in Oman).
This to-scale comparison of Turkmenistan vs. Oman uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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