Kentucky is about 1.6 times bigger than Sri Lanka.

Sri Lanka is approximately 65,610 sq km, while Kentucky is approximately 102,896 sq km, making Kentucky 57% larger than Sri Lanka. Meanwhile, the population of Sri Lanka is ~23.2 million people (18.8 million fewer people live in Kentucky).
Tip: This to-scale comparison of Sri Lanka vs. Kentucky uses the Mercator projection, which distorts the size of regions near the poles.