Country size comparison
compared to
Nigeria is about 53 times bigger than Swaziland.
Swaziland is approximately 17,364 sq km, while Nigeria is approximately 923,768 sq km, making Nigeria 5,220% larger than Swaziland. Meanwhile, the population of Swaziland is ~1.1 million people (224.0 million more people live in Nigeria).
Compare further: Nigeria vs. Swaziland