Mars size comparison: how tall is the Mars?
Mars: 6,792 km · 4,220 mi tall · 6.42 × 10²³ kg
Diameter 6,792 km · 228 million km from the Sun · gravity 3.7 m/s² (0.38 g)
Mars is 6,792 km · 4,220 mi tall (6.42 × 10²³ kg). That is about 3,971,930× the height of an average man (171 cm). Compare it side by side with people, animals, buildings and more on the board above — drag, zoom, switch cm / ft, or export an image.
Mars in other units
| Unit | Size |
|---|---|
| Kilometres | 6,792 km |
| Miles | 4,220.4 mi |
| Metres | 6,792,000 m |
| Feet | 22,283,465 ft |
How big is that?
Mars measures 6,792 km across. Earth is 12,742 km wide, so Mars is about 53.3% of the width of Earth.
What is about the same size as Mars?
| Compared with | Size | Difference |
|---|---|---|
| Venus (Sun & planets) | 12,104 km · 7,521 mi | 5,312 km larger (78.2%) |
| Ganymede (Moons) | 5,268 km · 3,273 mi | 1,524 km smaller (22.4%) |
| Callisto (Moons) | 4,821 km · 2,996 mi | 1,971 km smaller (29%) |
| Io (Moons) | 3,643 km · 2,264 mi | 3,149 km smaller (46.4%) |
| Mercury (Sun & planets) | 4,879 km · 3,032 mi | 1,913 km smaller (28.2%) |