Nebraska is about 1.4 times smaller than New Zealand.

New Zealand is approximately 268,838 sq km, while Nebraska is approximately 199,099 sq km, making Nebraska 74.06% the size of New Zealand. Meanwhile, the population of New Zealand is ~5.1 million people (3.2 million fewer people live in Nebraska).
Tip: This to-scale comparison of New Zealand vs. Nebraska uses the Mercator projection, which distorts the size of regions near the poles.