Mongolia is about 8 times bigger than Senegal.

Senegal is approximately 196,722 sq km, while Mongolia is approximately 1,564,116 sq km, making Mongolia 695% larger than Senegal. Meanwhile, the population of Senegal is ~18.9 million people (15.4 million fewer people live in Mongolia).
Tip: This to-scale comparison of Senegal vs. Mongolia 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.