Country size comparison
compared to
Swaziland is about 18 times smaller than Poland.
Poland is approximately 312,685 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 5.55% the size of Poland. Meanwhile, the population of Poland is ~38.1 million people (37.0 million fewer people live in Swaziland).
Compare further: Swaziland vs. Poland