Kenya is approximately 580,367 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 2.99% the size of Kenya. Meanwhile, the population of Kenya is ~53.5 million people (52.4 million fewer people live in Swaziland).
This to-scale map shows a size comparison of Kenya compared to Swaziland. For more details, see an in-depth quality of life comparison of Swaziland vs. Kenya using our country comparison tool.