Vanuatu is about 1.4 times smaller than Hawaii.

Hawaii is approximately 16,635 sq km, while Vanuatu is approximately 12,189 sq km, making Vanuatu 73.27% the size of Hawaii. Meanwhile, the population of Hawaii is ~1.4 million people (1.1 million fewer people live in Vanuatu).
Tip: This to-scale comparison of Hawaii vs. Vanuatu uses the Mercator projection, which distorts the size of regions near the poles.