Vanuatu is about 12 times smaller than Wisconsin.

Wisconsin is approximately 140,663 sq km, while Vanuatu is approximately 12,189 sq km, making Vanuatu 8.67% the size of Wisconsin. Meanwhile, the population of Wisconsin is ~5.7 million people (5.4 million fewer people live in Vanuatu).
Tip: This to-scale comparison of Wisconsin vs. Vanuatu uses the Mercator projection, which distorts the size of regions near the poles.