Mars
6,779 km - Mean diameter; approximate.
Mars is a rocky planet orbiting the Sun, with a reddish surface due to iron oxide.
Mean-radius spherical model for Mars; actual shape is not perfectly spherical.
NASA JPL — planetary physical parametersMars vs Earth: diameter comparison
The mean diameter of Earth is about 1.88 times the mean diameter of Mars. Selected basis: approximate values.
- Mars
- Mean diameter
- Earth
- Mean diameter
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
In perspective1.88 times
Measurements, assumptions & sources
Earth
12,740 km - Mean diameter; approximate.
Earth is the rocky planet on which we live and the third planet from the Sun.
Mean-radius spherical model for Earth; actual shape is not perfectly spherical.
NASA JPL — planetary physical parameters
Compare something else
There’s always another scale
Follow your curiosity.
SpaceMars6,779 kmMars is a rocky planet orbiting the Sun, with a reddish surface due to iron oxide.
SpaceEarth12,740 kmEarth is the rocky planet on which we live and the third planet from the Sun.
SpaceMoon3,475 kmThe Moon is Earth’s natural satellite and the brightest large object in Earth’s night sky.
SpaceJupiter139,800 kmJupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.
SpaceSun1,391,000 kmThe Sun is the star at the centre of the Solar System.Side by side
Another point of view.
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleGot a good eye for scale?