New Mexico is about 1.5 times bigger than Utah.

Utah is approximately 212,751 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 48% larger than Utah. Meanwhile, the population of Utah is ~2.8 million people (704,706 fewer people live in New Mexico).
Tip: This to-scale comparison of Utah vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.