Eritrea is about 18 times smaller than Saudi Arabia.

Saudi Arabia is approximately 2,149,690 sq km, while Eritrea is approximately 117,600 sq km, making Eritrea 5.47% the size of Saudi Arabia. Meanwhile, the population of Saudi Arabia is ~35.4 million people (29.1 million fewer people live in Eritrea).
This to-scale comparison of Saudi Arabia vs. Eritrea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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