Country size comparison
compared to
Eritrea is about 7 times bigger than Swaziland.
Swaziland is approximately 17,364 sq km, while Eritrea is approximately 117,600 sq km, making Eritrea 577% larger than Swaziland. Meanwhile, the population of Swaziland is ~1.1 million people (5.1 million more people live in Eritrea).
Compare further: Eritrea vs. Swaziland