Our Solar System has eight planets which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Out of all of these planets, Jupiter has the most gravity. In fact, the only object in the Solar System with a gravity larger than Jupiter is the Sun.

The gravitational force that an object exerts depends on three things; its density, mass, and size. Despite Jupiter having the third lowest density (1.33 grams per cubic centimeter), only behind Uranus (1.27) and Saturn (0.69), its stature as the largest planet in the Solar System in terms of both mass and size offsets this. Jupiter is large enough to fit any object in our Solar System inside itself, with the exceptions of Saturn and the Sun.

More Info: www.worldatlas.com