Scale Explorer

Space

How big is Pluto?

Pluto

Diameter
2,376 km 1,476 mi
Mass
1.3030000000000002 × 10²² kg 2.873 × 10²² lb
Volume
7.02 billion km³ 1.68 billion cu mi
Show
Human, Pluto, Moon, Mars drawn to the same scaleHuman: height 1.61–1.75 m (too small to see at this scale). Pluto: diameter 2,376 km. Moon: diameter 3,475 km. Mars: equatorial diameter 6,792 km.Human: 1.61–1.75 m (too small to see at this scale)Pluto: 2,376 kmMoon: 3,475 kmMars: 6,792 kmMars6,792 kmMoon3,475 kmPluto2,376 kmHuman1.61–1.75 m · too small to see

Human is too small to see at this scale and is marked with ▲.

Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension. A faded outline shows the top of a size range.

Compare Pluto with something else →

Zoom out from an average adult to Pluto

Pluto is too big to show next to an average adult in one picture, so here it is in 7 steps. Each step is drawn to its own scale and zooms out from the step before.

  1. Step 1 of 7 Human → Megalodon

    A megalodon is about 8.6–15 times as long as an average adult is tall.

    Human, Megalodon drawn to the same scaleHuman: height 1.61–1.75 m. Megalodon: maximum length (estimates) 15–24.3 m.Human: 1.61–1.75 mMegalodon: 15–24.3 mMegalodon15–24.3 mHuman1.61–1.75 m
    Step 1: Human and Megalodon at the same scale.

  2. Step 2 of 7 Megalodon → Great Pyramid of Giza

    The Great Pyramid of Giza is about 5.6–9.1 times as tall as a megalodon is long.

    Megalodon, Great Pyramid of Giza drawn to the same scaleMegalodon: maximum length (estimates) 15–24.3 m. Great Pyramid of Giza: current height ≈ 137 m.Megalodon: 15–24.3 mGreat Pyramid of Giza: ≈ 137 mGreat Pyramid of Giza≈ 137 mMegalodon15–24.3 m
    Step 2: Megalodon and Great Pyramid of Giza at the same scale.

  3. Step 3 of 7 Great Pyramid of Giza → Golden Gate Bridge

    The Golden Gate Bridge is about 20 times as long as the Great Pyramid of Giza is tall.

    Great Pyramid of Giza, Golden Gate Bridge drawn to the same scaleGreat Pyramid of Giza: current height ≈ 137 m. Golden Gate Bridge: total length 2,737 m.Great Pyramid of Giza: ≈ 137 mGolden Gate Bridge: 2,737 mGolden Gate Bridge2,737 mGreat Pyramid of Giza≈ 137 m
    Step 3: Great Pyramid of Giza and Golden Gate Bridge at the same scale.

  4. Step 4 of 7 Golden Gate Bridge → Mount Everest

    Mount Everest is about 3.2 times as tall as the Golden Gate Bridge is long.

    Golden Gate Bridge, Mount Everest drawn to the same scaleGolden Gate Bridge: total length 2,737 m. Mount Everest: height above sea level 8,848.86 m.Golden Gate Bridge: 2,737 mMount Everest: 8,848.86 mMount Everest8,848.86 mGolden Gate Bridge2,737 m
    Step 4: Golden Gate Bridge and Mount Everest at the same scale.

  5. Step 5 of 7 Mount Everest → Mauna Kea

    Mauna Kea is about 1.2 times as tall as Mount Everest.

    Mount Everest, Mauna Kea drawn to the same scaleMount Everest: height above sea level 8,848.86 m. Mauna Kea: height from ocean floor to summit ≈ 10,211 m.Mount Everest: 8,848.86 mMauna Kea: ≈ 10,211 mMauna Kea≈ 10,211 mMount Everest8,848.86 m
    Step 5: Mount Everest and Mauna Kea at the same scale.

  6. Step 6 of 7 Mauna Kea → Olympus Mons

    Olympus Mons is about 2.2–2.6 times as high as Mauna Kea is tall.

    Mauna Kea, Olympus Mons drawn to the same scaleMauna Kea: height from ocean floor to summit ≈ 10,211 m. Olympus Mons: height 22–27 km.Mauna Kea: ≈ 10,211 mOlympus Mons: 22–27 kmOlympus Mons22–27 kmMauna Kea≈ 10,211 m
    Step 6: Mauna Kea and Olympus Mons at the same scale.

  7. Step 7 of 7 Olympus Mons → Pluto

    Pluto is about 88–110 times as wide as Olympus Mons is high.

    Olympus Mons, Pluto drawn to the same scaleOlympus Mons: height 22–27 km. Pluto: diameter 2,376 km.Olympus Mons: 22–27 kmPluto: 2,376 kmPluto2,376 kmOlympus Mons22–27 km
    Step 7: Olympus Mons and Pluto at the same scale.

Dimensions

MeasurementMetricImperialNotesSource
Diameter 2,376 km 1,476 mi Diameter from the NSSDCA planetary table (radius 1,188 km) [1]
Mass 1.3030000000000002 × 10²² kg 2.873 × 10²² lb Total mass; source states 0.01303 x 10^24 kg [2]
Volume 7.02 billion km³ 1.68 billion cu mi Source states 0.702 x 10^10 km3 [2]

About Pluto

Pluto is a dwarf planet in the Kuiper Belt, discovered in 1930 and long counted as the ninth planet. NASA's fact sheet gives a radius of 1,188 km and a diameter of 2,376 km, about one-fifth the width of Earth and about two-thirds the width of Earth's Moon. NASA's New Horizons spacecraft flew past it in July 2015.

  • NASA's Pluto facts page gives an equatorial diameter of about 2,377 km (1,477 miles), about 1/5 the width of Earth. [3]
  • Pluto's largest moon, Charon, has an equatorial radius of 606 km. [2]
  • Pluto's tallest mountains are 2 to 3 km (6,500 to 9,800 ft) high, and some craters reach 260 km (162 miles) across. [3]
  • New Horizons photographed Pluto's heart-shaped region on 13 July 2015 from 768,000 km away. [3]

How many fit?

  • ≈ 1.4 million × Human · height lined up end to end match the Pluto · diameter
  • ≈ 1.6 × 10²⁰ × Human · body mass on the scales weigh as much as Pluto · mass
  • ≈ 270 × Mount Everest · height above sea level lined up end to end match the Pluto · diameter

Counts divide one sourced figure by another. "End to end" uses each object's main measurement; weight and volume rows appear only when both figures are sourced.

How it compares

Factors compare the diameter of Pluto with each object’s own main measurement (height for a human). Where a size varies, the factor is given as a range.

Notes on these figures

  • The NSSDCA table gives 2,376 km while NASA's Pluto facts page gives about 2,377 km; both reflect a radius of about 1,188 km.

Sources

  1. NASA Space Science Data Coordinated Archive, Planetary Fact Sheet - Metric. Accessed 25 September 2026.
  2. NASA Space Science Data Coordinated Archive, Pluto Fact Sheet. Accessed 25 September 2026.
  3. NASA Science, Pluto: Facts. Accessed 25 September 2026.

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