New Zealand is about 3.4 times bigger than Maine.

Maine is approximately 79,931 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 236% larger than Maine. Meanwhile, the population of Maine is ~1.3 million people (3.7 million more people live in New Zealand).
Tip: This to-scale comparison of Maine vs. New Zealand uses the Mercator projection, which distorts the size of regions near the poles.