Uranus is an ice giant with a diameter of about 51,000 kilometers, roughly four times the diameter of Earth.

Quick Scoop

To give a bit more detail in normal language:

  • The equatorial diameter of Uranus is about 51,000–51,100 kilometers (around 31,700 miles).
  • That makes it the third-largest planet in our solar system, after Jupiter and Saturn.
  • Its radius is about 25,400 kilometers, so if you went from the center of Uranus to the “surface” (really the top of the atmosphere), that’s the distance you’d travel.
  • Uranus is about four times wider than Earth, so if Earth were the size of a large apple, Uranus would be closer to a basketball in comparison.

Here’s the same info in a compact table (HTML, as requested):

[6][3] [3] [9][1] [9] [5][1]
Property Uranus Earth (for comparison)
Equatorial diameter ≈ 51,000–51,100 km≈ 12,742 km
Mean radius ≈ 25,362 km≈ 6,371 km
Relative size About 4× Earth’s diameterBaseline

Information gathered from public forums or data available on the internet and portrayed here.