The equatorial diameter of Earth is 12,756 km.
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The diameter of Earth is roughly 12,742 kilometers (7,918 miles) at the equator. This means that if you were to measure straight through the center of the Earth from one point on the surface to another, the distance would be approximately 12,742 kilometers.
Mercury is smaller than Earth in terms of diameter. Mercury's diameter is about 4,880 kilometers, which is around 38% the size of Earth's diameter.
No, Mars has a smaller diameter than Earth. Earth's diameter is about 12,742 kilometers, while Mars's diameter is about 6,779 kilometers.
The diameter of Earth is 7,926.2 miles (12,756 km).
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The diameter of Venus is about 95% of the diameter of the Earth. Venus is 12103.6 kilometers in diameter from any reference. (Its slow spin does not produce a bulge.) Earth has an equatorial diameter of about 12756.2 kilometers and a polar diameter of about 12713.6 kilometers.