Nauru is about 1,720 times smaller than Guinea-Bissau.

Guinea-Bissau is approximately 36,125 sq km, while Nauru is approximately 21 sq km, making Nauru 0.06% the size of Guinea-Bissau. Meanwhile, the population of Guinea-Bissau is ~2.0 million people (2.0 million fewer people live in Nauru).
Tip: This to-scale comparison of Guinea-Bissau vs. Nauru uses the Mercator projection, which distorts the size of regions near the poles.
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