Pluto has a volume of about 1.53 cubic miles, a radius of 715.2 miles, a surface area of 6.42 million miles and an equatorial circumference of 4,493.7 miles. It is only 0.006 times as voluminous as Earth.
Pluto's radius and circumference are 0.18 times the radius of the Earth, and Pluto has only 0.03 times the amount of surface area. Pluto was reclassified from a planet to a dwarf planet in 2006 because it lacked the ability to clear its orbital path due to its small size. Pluto has a mass of only 0.002 times that of the Earth and a density of 0.37 times the Earth's density.