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Size can mean different things.

Mars is just over half the diameter of Earth, and has only 11% as much mass.

These are the most common "size" ratios (mars/earth):

Mass: 0.107 (10.7%)
Mars has 11% of the mass of Earth.

Volume: 0.151 (15.1%)
Mars has 15% of the volume of Earth.

Mean Radius: 0.532 (53.2%)
Mars has a radius about half the radius of Earth.

The equatorial diameter of Mars is 6792 km (4220 miles).
The equatorial diameter of Earth is 12756 km (7926 miles).



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11y ago
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9y ago

Mars is approximately half the size of Earth. The diameter of Mars at the equator is 6,800 kilometers, which is 53 percent of the diameter of Earth.

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11y ago

The planet Mars is smaller than the Earth. It is also smaller than the planet Venus, which is the planet that is closest in size to the Earth (but like Mars, Venus is smaller than the Earth).

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11y ago

Mars has a diameter about 0.53 of the Earth's.

Mars has a mass about 0.107 times the Earth's.

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11y ago

it's not much smaller. the only reason it's so much colder on Mars than on earth is because of its distance from the sun.

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10y ago

ther both the same size

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Q: How big is mars compared to the earth?
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Related questions

What are the advantages on Earth compared to Mars?

Earth is big. Mars is small.


What is Mars mass compared to earth?

Really small. 3.68x10^37% in scientific notation.


Does being big affects living in mars?

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What can Mars be compared to?

Mars can be compared to Earth, because they both have numerous similarities.


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Surface gravity on mars is 0.376 compared to that of the earth.