Mars has that (approximate) diameter.
The planet with a diameter closest to this value is Uranus, which has a diameter of 31,763 miles.
Mercury's diameter is approximately 3000 miles. Neptune has a diameter of 30,200 miles, and Uranus has a diameter of 32,600 miles.
Mercury
Neptune
8000 miles
Jupiter's diameter is 88,800 miles (143,000 kilometers).
Neptune's diameter is 30,599 miles (49,244 km)
Earth's diameter is approximately 7,920 miles (12,700 kilometers).
EarthAfter the Sun (861,800 miles diameter), these are the ten largest bodies in the Solar System:Jupiter (86,690 miles diameter)Saturn (72,208 miles diameter)Uranus (31,499 miles diameter)Neptune (30,531 miles diameter)Earth (7,990 miles diameter)Venus (7,504 miles diameter)Mars (4,204 miles diameter)Ganymede - Jupiter moon (3,262 miles diameter)Titan - Saturn moon (3,193 miles diameter)Mercury (3,026 miles diameter)
The planet Mercury has a diameter of about 3,032 miles.
Mercury is the closest planet to the Sun. It has a diameter of 3,032 miles, or 4,879 kilometers. It is the smallest planet.
It's about 7926 miles at the equator.