Alaska is about 23 times bigger than Sri Lanka.

Sri Lanka is approximately 65,610 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 2,158% larger than Sri Lanka. Meanwhile, the population of Sri Lanka is ~23.2 million people (22.5 million fewer people live in Alaska).
Tip: This to-scale comparison of Sri Lanka vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.