Estonia is about 3.9 times smaller than Oklahoma.

Oklahoma is approximately 177,847 sq km, while Estonia is approximately 45,228 sq km, making Estonia 25.43% the size of Oklahoma. Meanwhile, the population of Oklahoma is ~3.8 million people (2.5 million fewer people live in Estonia).
This to-scale comparison of Oklahoma vs. Estonia uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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