Guinea-Bissau is about 3.3 times smaller than Malawi.

Malawi is approximately 118,484 sq km, while Guinea-Bissau is approximately 36,125 sq km, making Guinea-Bissau 30.49% the size of Malawi. Meanwhile, the population of Malawi is ~22.2 million people (20.0 million fewer people live in Guinea-Bissau).
Tip: This to-scale comparison of Malawi vs. Guinea-Bissau uses the Mercator projection, which distorts the size of regions near the poles.
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