New Hampshire is about 4.6 times bigger than Delaware.

Delaware is approximately 5,060 sq km, while New Hampshire is approximately 23,227 sq km, making New Hampshire 359% larger than Delaware. Meanwhile, the population of Delaware is ~897,934 people (418,536 more people live in New Hampshire).
Tip: This to-scale comparison of Delaware vs. New Hampshire uses the Mercator projection, which distorts the size of regions near the poles.