Laos is about 12 times bigger than New Jersey.

New Jersey is approximately 19,211 sq km, while Laos is approximately 236,800 sq km, making Laos 1,133% larger than New Jersey. Meanwhile, the population of New Jersey is ~8.8 million people (1.0 million fewer people live in Laos).
Tip: This to-scale comparison of New Jersey vs. Laos uses the Mercator projection, which distorts the size of regions near the poles.