Mongolia is about 1.3 times bigger than Mali.

Mali is approximately 1,240,192 sq km, while Mongolia is approximately 1,564,116 sq km, making Mongolia 26% larger than Mali. Meanwhile, the population of Mali is ~25.2 million people (21.6 million fewer people live in Mongolia).
Tip: This to-scale comparison of Mali vs. Mongolia uses the Mercator projection, which distorts the size of regions near the poles.
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