How small is Pluto?


Quick Answer

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.

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Full Answer

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.

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