How does the diameter of the terrestial and jovian planets compare?

Terrestrial planets, which include Mercury, Venus, Earth, and Mars, generally have smaller diameters, ranging from about 4,880 km to 12,742 km. In contrast, Jovian planets, such as Jupiter, Saturn, Uranus, and Neptune, are significantly larger; for instance, Jupiter has a diameter of about 139,820 km. This stark difference in size reflects their distinct compositions and structures, with terrestrial planets being rocky and smaller, while Jovian planets are gas giants with vast atmospheres.