Relative to the mass of the Earth which is 5.976 x 10^27 grams
Planet...................Radius(km)..............Mass(Earth=1.0)............ Mercury 2,425 0.054 Venus 6,070 0.88 Earth 6,378 1.00 Mars 3,395 0.149 Jupiter 71,300 1316 Saturn 60,100 755 Uranus 24,500 52 Neptune 25,100 44 Pluto 3,200 0.1