###### Asked in Earth Sciences, History of Science

Earth Sciences

History of Science

# How big is the earths diameter?

## Answer

###### Wiki User

###### 01/08/2013

The diameter is roughly 5500 miles and the size of it around
would be (estimate) around 13,000 miles.

The diameter of the earth at the equator is 12,756.32 kilometers,
or 7,926.41 miles. The diameter of the earth through the poles is
12,715.43 kilometers, or 7,901 miles. Thus the earth is 41 km or 25
miles wider than it is tall, giving it a slight bulge at the
equator. This shape is known as an ellipsoid or more properly,
geoid (earth-like ball).

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Mercury's diameter (at the equator) = 4880km or 0.3825 x Earths
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Venus' diameter = 12104km or 0.9488 x Earths
Earth's diameter = 12756km
Mars' diameter = 6794km or 0.5323 x Earths
Jupiter's diameter = 142,984km or 11.21 x Earths
Saturn's diameter = 120,534km or 9.45 x Earths
Uranus' diameter = 51,114km or 4.01 x Earths
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From smallest (1) to largest (8)
1Mercury. Diameter (at the equator) = 4880km or 0.3825 x Earths
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2Mars. Diameter = 6794km or 0.5323 x Earths
3Venus. Diameter = 12104km or 0.9488 x Earths
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Mars' diameter = 6794km or 0.5323 x Earths
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Saturn's diameter = 120,534km or 9.45 x Earths
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I included Pluto on the end there, its not classed as a planet
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Mercury's diameter (at the equator) = 4880km or 0.3825 x Earths
diameter
Venus' diameter = 12104km or 0.9488 x Earths
Earth's diameter = 12756km
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