Peru is about 1.4 times smaller than Sudan.

Sudan is approximately 1,861,484 sq km, while Peru is approximately 1,285,216 sq km, making Peru 69.04% the size of Sudan. Meanwhile, the population of Sudan is ~51.7 million people (17.1 million fewer people live in Peru).
Tip: This to-scale comparison of Sudan vs. Peru uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.