New Zealand is about 1.4 times bigger than Nebraska.

Nebraska is approximately 199,099 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 35% larger than Nebraska. Meanwhile, the population of Nebraska is ~1.8 million people (3.2 million more people live in New Zealand).
Tip: This to-scale comparison of Nebraska vs. New Zealand uses the Mercator projection, which distorts the size of regions near the poles.