Apr 2, 2026 · With a radius of 2,106 miles (3,390 kilometers), Mars is about half the size of Earth. If Earth were the size of a nickel, Mars would be about as big as a raspberry.

Mars is a small planet, larger than only Mercury and slightly more than half the size of Earth. Its equatorial radius measures 3,396 kilometers (2,110 miles), with a mean polar radius of 3,379 …

Mars is approximately half the diameter of Earth or twice that of the Moon, with a surface area only slightly less than the total area of Earth's dry land. [2]

Apr 14, 2026 · The diameter of Mars is only about half of the Earth’s diameter, which is 12,742 km (7,917 miles). Also, Mars is only about two times bigger than our Moon, which is 3,474 km (2,158 …

Jan 23, 2026 · Mars has a diameter (distance from the center) of almost 6.791 kilometers, and it is roughly 50% of the Earth’s size. Mars is more likely to be struck by asteroid belt debris and short …

Diameter: 6794 km (about half the diameter of Earth) Surface area: 145 million sq km (about the same as Earth’s land area) Gravity: 3.711 m/s 2 (about one third of Earth’s gravity) Density: 3.93 g/cm 3 …

Oct 20, 2023 · Size: Mars is about 4,212 miles (6,779 kilometers) in diameter. Distance from the Sun: Mars is the fourth planet from the Sun and orbits roughly 142 million miles (229 million km) away.

Aug 2, 2012 · Mars is about half (53 percent) the size of Earth, but because Mars is a desert planet, it has the same amount of dry land as Earth.

6 days ago · What is the size of Mars? Mars is the second smallest planet in the solar system, only larger than Mercury and slightly more than half the size of Earth. It has an equatorial radius of 3,396 …

Apr 9, 2026 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.