Saudi Arabia is about 2.1 times bigger than Mauritania.

Mauritania is approximately 1,030,700 sq km, while Saudi Arabia is approximately 2,149,690 sq km, making Saudi Arabia 109% larger than Mauritania. Meanwhile, the population of Mauritania is ~4.2 million people (31.2 million more people live in Saudi Arabia).
This to-scale comparison of Mauritania vs. Saudi Arabia uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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