Czech Republic is about 3.9 times smaller than Oman.

Oman is approximately 309,500 sq km, while Czech Republic is approximately 78,867 sq km, making Czech Republic 25.48% the size of Oman. Meanwhile, the population of Oman is ~3.8 million people (6.9 million more people live in Czech Republic).
This to-scale comparison of Oman vs. Czech Republic uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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