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Planet Sizes and Locations in Our Solar System

Illustration showing the planets stacked in rows.
The eight planets and dwarf planet Pluto.
NASA

Our solar system has eight planets, and five officially recognized dwarf planets. Which planet is biggest? Which is smallest? What is the order of the planets as we move out from the Sun?

This is a simple guide to the sizes of planets based on the equatorial diameter – or width – at the equator of each planet. Each planet’s width is compared to Earth’s equatorial diameter, which is about 7,926 miles (12,756 kilometers).

At the bottom of the page, there is a handy list of the order of the planets moving away from our Sun.

Sizes of Planets

  1. A view of Jupiter's Great Red Spot and colorful cloud bands of tan, brown, white, and orange as seen from the Juno spacecraft.
    01

    Jupiter

    Jupiter is the largest planet in the solar system. It’s about 11 times wider than Earth with an equatorial diameter of 88,846 miles (about 142,984 kilometers). Jupiter is the fifth planet from the Sun, orbiting at an average distance of 483.7 million miles (778 million kilometers). It’s about five times farther from the Sun than Earth.

    Explore Jupiter

  2. A spacecraft looks down on a soft gold-colored Saturn surrounded by its rings.
    02

    Saturn

    Saturn, known for its spectacular icy rings, is the second largest planet in our solar system. It’s about nine times wider than Earth, with an equatorial diameter of about 74,898 miles (about 120,536 kilometers). Saturn is the sixth planet from the Sun, orbiting at an average distance of 889.8 million miles (1.4 billion kilometers). It’s about 9.5 times farther from the Sun than Earth.

    Explore Saturn

  3. Pale blue planet Uranus is seen against the darkness of space in an image from the Voyager 2 spacecraft.
    03

    Uranus

    Uranus is the third largest planet in our solar system. It’s about four times wider than Earth, and has an equatorial diameter of about 31,763 miles (51,118 kilometers). Uranus is the seventh planet from the Sun, orbiting at an average distance of 1.8 billion miles (2.9 billion kilometers). It’s about 19 times farther from the Sun than Earth. 

    Explore Uranus

  4. Neptune is a deep blue with darker bands, and white cloud bands in this image from the Voyager 2 spacecraft.
    04

    Neptune

    Neptune is the fourth largest planet. It’s about four times wider than Earth with an equatorial diameter of about 30,775 miles (49,528 kilometers). Neptune is the eighth, and the most distant planet from the Sun, orbiting at an average distance of 2.8 billion miles (4.5 billion kilometers). Neptune is about 30 times farther from the Sun than Earth. 

    Explore Neptune

  5. A view of Earth from Apollo 17 showing the blue ocean, reddish brown landmasses, and wispy, white clouds.
    05

    Earth

    Earth is the fifth largest planet in the solar system. It has an equatorial diameter of about 7,926 miles (12,756 kilometers). Earth is the third planet from the Sun, orbiting at an average distance of 93 million miles (149.7 million kilometers).

    Explore Earth

  6. A serene-looking Venus with creamy white, and tan clouds.
    06

    Venus

    Venus is the sixth largest planet in the solar system. Venus is about the same width as Earth, and has an equatorial diameter of about 7,521 miles (12,104 kilometers). For this reason, Venus is sometimes known as Earth’s twin. Venus is the second planet from the Sun, orbiting at an average distance of 67.2 million miles (108 million kilometers). Venus is about 26 million miles (42 million kilometers) closer to the Sun than Earth.  

    Explore Venus

  7. Mars is a reddish brown in this image from a spacecraft. A deep gash is visible across the center of the planet.
    07

    Mars

    Mars, the red planet, is the seventh largest planet in our solar system. Mars is about half the width of Earth, and has an equatorial diameter of about 4,221 miles (6,792 kilometers). Mars is the fourth planet from the Sun, orbiting at an average distance of 141.6 million miles (227.9 million kilometers). Mars is about 49 million miles (79 million kilometers) farther from the Sun than Earth.

    Explore Mars

  8. Mercury is gray with bright white patches, and craters visible in this image from the MESSENGER spacecraft.
    08

    Mercury

    Mercury is the smallest planet in our solar system. Mercury is a little more than one-third the width of Earth, and has an equatorial diameter of about 3,032 miles (4,880 kilometers). Mercury is the closest planet to the Sun, orbiting at an average distance of 36 million miles (58 million kilometers). Mercury is 57 million miles closer to the Sun than Earth.

    Explore Mercury

Sizes of Dwarf Planets

  1. Pluto is reddish and has a heart shape lighter patch in the lower right half of this image from the New Horizons spacecraft.
    01

    Pluto

    Pluto is the largest dwarf planet in our solar system, just slightly larger than Eris, at number two. Pluto has an equatorial diameter of about 1,477 miles (2,377 kilometers). Pluto is about 1/5th the width of Earth. Pluto orbits the Sun at a distance of about 3.67 billion miles (5.9 billion kilometers), or about 39 times farther away than Earth from the Sun.

    Explore Pluto

  2. A gray planet with a distant moon, and a faraway Sun.
    02

    Eris

    Eris is the second largest dwarf planet with an equatorial diameter of about 1,445 miles (about 2,326 kilometers). Eris is about 1/5th the width of Earth. It orbits the Sun from an average distance of 6.3 billion miles (10 billion kilometers). Eris is about 68 times farther from the Sun than Earth.

    Explore Eris

  3. Dwarf planet Haumea looks like a bright dot with two smaller ones on each side.
    03

    Haumea

    Haumea is the third largest dwarf planet with an equatorial diameter of about 1,080 miles (about 1,740 kilometers). Haumea is about 1/7 the width of Earth. It orbits the Sun from an average distance of 4 billion miles (6.5 billion kilometers), and it’s about 43 times farther from the Sun than Earth.

    Explore Haumea

  4. The top of red dwarf planet Makemake with its moon to the right and in front.
    04

    Makemake

    The fourth largest dwarf planet in the solar system, Makemake has an equatorial diameter of about 891 miles (about 1,434 kilometers). Makemake is 1/9 the width of Earth. Makemake orbits the Sun from an average distance of 4.3 billion miles (6.9 billion kilometers), and it’s about 46 times farther from the Sun than is Earth.

    Explore Makemake

  5. Gray Ceres has a bright spot near its upper left side in this image from NASA's Dawn spacecraft.
    05

    Ceres

    Ceres is the smallest dwarf planet with an equatorial diameter of about 599 miles (about 964 kilometers). Ceres is about 1/13 the width of Earth. The closest dwarf planet to the Sun, and the only dwarf planet in the inner solar system, Ceres orbits the Sun from an average distance of 257 million miles (413 million kilometers) Ceres is about 2.8 times farther from the Sun than Earth.

Compare Earth to other planets using NASA's Eyes on the Solar System.

Order of Planets and Dwarf Planets - Distance From the Sun

Orange sun with colorful planets trailing out to one side.
A stylized illustration of our solar system.
NASA/JPL
  • Mercury: 36 million miles (58 million kilometers)
  • Venus: 67.2 million miles (108 million kilometers)
  • Earth: 93 million miles (149.7 million kilometers)
  • Mars: 141.6 million miles (227.9 million kilometers)
  • Dwarf planet Ceres: 257 million miles (413 million kilometers)
  • Jupiter: 483.7 million miles (778 million kilometers)
  • Saturn: 889.8 million miles (1.4 billion kilometers)
  • Uranus: 1.8 billion miles (2.9 billion kilometers)
  • Neptune: 2.8 billion miles (4.5 billion kilometers)
  • Dwarf Planet Pluto: 3.67 billion miles (5.9 billion kilometers)
  • Dwarf Planet Haumea: 4 billion miles (6.5 billion kilometers)
  • Dwarf Planet Makemake: 4.3 billion miles (6.9 billion kilometers)
  • Dwarf Planet Eris: 6.3 billion miles (10 billion kilometers)

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