Phobos size comparison: how tall is the Phobos?
Phobos: 22,500 m · 73,819 ft tall · 1.07 × 10¹⁶ kg
Diameter 22.5 km · 9,376 km from Mars · gravity 0.0057 m/s² (0.0006 g) · irregular, 27 × 22 × 18 km
Phobos is 22,500 m · 73,819 ft tall (1.07 × 10¹⁶ kg). That is about 13,158× 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.
Phobos in other units
| Unit | Size |
|---|---|
| Kilometres | 22.5 km |
| Miles | 14 mi |
| Metres | 22,500 m |
| Feet | 73,819 ft |
How big is that?
Phobos measures 22.5 km across. Earth is 12,742 km wide, so Phobos is about 0.2% of the width of Earth.
What is about the same size as Phobos?
| Compared with | Size | Difference |
|---|---|---|
| Gaia BH1 (Black holes) | 56,800 m · 186,352 ft | 34.3 km larger (152.4%) |
| V404 Cygni (Black holes) | 53,200 m · 174,541 ft | 30.7 km larger (136.4%) |
| A0620-00 (Black holes) | 39,000 m · 127,953 ft | 16.5 km larger (73.3%) |
| Pacific Ocean (Oceans) | 10,935 m · 35,876 ft | 11.6 km smaller (51.4%) |
| Philippine Sea (Seas & gulfs) | 10,540 m · 34,580 ft | 12 km smaller (53.2%) |
| Coral Sea (Seas & gulfs) | 9,140 m · 29,987 ft | 13.4 km smaller (59.4%) |
| Deimos (Moons) | 12,400 m · 40,682 ft | 10.1 km smaller (44.9%) |