Utah is about 1.3 times smaller than Nevada.

Nevada is approximately 284,448 sq km, while Utah is approximately 212,751 sq km, making Utah 74.79% the size of Nevada. Meanwhile, the population of Nevada is ~2.7 million people (63,334 more people live in Utah).
Tip: This to-scale comparison of Nevada vs. Utah uses the Mercator projection, which distorts the size of regions near the poles.