Pluto would be the best answer, but Pluto is only a dwarf planet. Also its largest moon, Charon, is still not as big as Pluto itself.
Venus.
With a radius of 3396km, the planet Mars is about the same size as the inner and outer core of the earth (which is around 3490km radius in total).
The moon is smaller than the Earth. Its diameter is just over one quarter that of Earths, but its total mass is only around 1.23% of Earths mass.
Venus is closest to the Earths size and mass - often referred to as Earths sister or twin planet. Venus' Mass is around 82% of Earths, while its diameter is a little smaller than Earths at around 95% of Earths diameter.
There is no planet that has the same size moon as the planet. This is only possible if Pluto was still a planet.
In size and mass it is enormous compared to it's parent planet - The Earth.
Charon.
Venus is closest to earths planet size.
Venus, because they're about the same size
It is a moon of the dwarf planet Pluto. They are so nearly the same size it could almost be called a double planet system
Pluto
Pluto would be the best answer, but Pluto is only a dwarf planet. Also its largest moon, Charon, is still not as big as Pluto itself.
Because of the Earths rotation, Happy astronomy! :)
A planet the same size as Pluto would likely be classified as a dwarf planet, given the criteria set by the International Astronomical Union. It would have a diameter of about 2,377 kilometers and an orbital path beyond Neptune in the Kuiper Belt.
the planet you are looking for is Pluto it is about the same size as its moon and now scietist no longer call it a planet
Venus.