New Zealand is about 16 times bigger than Hawaii.

Hawaii is approximately 16,635 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 1,516% larger than Hawaii. Meanwhile, the population of Hawaii is ~1.4 million people (3.7 million more people live in New Zealand).
Tip: This to-scale comparison of Hawaii vs. New Zealand uses the Mercator projection, which distorts the size of regions near the poles.