Peru is about 1.2 times smaller than Mongolia.

Mongolia is approximately 1,564,116 sq km, while Peru is approximately 1,285,216 sq km, making Peru 82.17% the size of Mongolia. Meanwhile, the population of Mongolia is ~3.2 million people (29.0 million more people live in Peru).
This to-scale comparison of Mongolia vs. Peru uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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