Idaho is about 13 times bigger than Hawaii.

Hawaii is approximately 16,635 sq km, while Idaho is approximately 214,314 sq km, making Idaho 1,188% larger than Hawaii. Meanwhile, the population of Hawaii is ~1.4 million people (207,281 more people live in Idaho).
Tip: This to-scale comparison of Hawaii vs. Idaho uses the Mercator projection, which distorts the size of regions near the poles.