Alaska is about 26 times bigger than Croatia.

Croatia is approximately 56,594 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 2,518% larger than Croatia. Meanwhile, the population of Croatia is ~4.2 million people (3.5 million fewer people live in Alaska).
Tip: This to-scale comparison of Croatia vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.