Wyoming is about 15 times bigger than Hawaii.

Hawaii is approximately 16,635 sq km, while Wyoming is approximately 251,489 sq km, making Wyoming 1,412% larger than Hawaii. Meanwhile, the population of Hawaii is ~1.4 million people (796,675 fewer people live in Wyoming).
Tip: This to-scale comparison of Hawaii vs. Wyoming uses the Mercator projection, which distorts the size of regions near the poles.