Pluto (Dwarf planet)
2,376 km (1,476 mi)
Equatorial diameter
The dwarf planet at the edge of the classical Solar System, with a heart-shaped plain. Diameter: 2,376 km, smaller than our Moon.
Published
How big is that?
2,376 km is 269 times Mount Everest and 68% of the Moon.
Pluto is the 19th largest of the 39 Cosmic Scale objects, and the 19th largest of the 109 objects across all three SizeItUp games.
Size comparison
To scale, smallest to largest: Pluto in orange beside the Cosmic Scale objects nearest in size, in teal.
| Object | Size | vs Pluto |
|---|---|---|
| Ceres (Dwarf planet)The biggest object in the asteroid belt between Mars and Jupiter. | 939.4 km across | 40% of the size |
| Charon (Moon of Pluto)Pluto's largest moon, half its size. | 1,214 km across | 51% of the size |
| Pluto (Dwarf planet) | 2,376 km across | – |
| Triton (Moon of Neptune)Neptune's largest moon, which orbits backwards. | 2,706.8 km across | 1.1× bigger |
| Europa (Moon of Jupiter)An icy moon with an ocean hidden under its cracked crust. | 3,121.6 km across | 1.3× bigger |
In other units
| Metres | 2,376,000 |
|---|---|
| Kilometres | 2,376 |
| Feet | 7,795,000 |
| Miles | 1,476 |
How it's measured
Equatorial diameter. NASA Planetary Fact Sheet.
Planets spin, so they bulge at the equator: the equatorial diameter is a little larger than the distance from pole to pole.
Sources
- nssdc.gsfc.nasa.gov: Pluto: 2,376 km.
Checked against the source on .
Could you have guessed it by eye?
Pluto is one of the objects in Cosmic Scale, a daily size comparison game: you stretch a shape to the size you think is right beside one you know.