Planets · #40 biggest of 1,014
How big is Callisto (moon)?
4,821 km
Callisto (moon) measures 4,821 km. That's about 545 Mount Everests lined up end to end.
By the numbers
- That's 4,821 km, or about 2,996 miles.
- It's about 2.84 million times taller than an average adult (1.7 m).
- Roughly 545 Mount Everests could line up across it.
- Walking nonstop, you'd need about 40 days to travel its length.
- Out of all 1,014 things in this collection, it ranks #40 by size.
Size comparison
How Callisto (moon) stacks up against things of a similar size. Tap any bar to explore it.
Ganymede (moon)
5,268 km
Titan (moon)
5,149 km
Paraná River
4,880 km
Mercury
4,879 km
Callisto (moon)
4,821 km
Congo River
4,700 km
Amur River
4,444 km
Lena River
4,400 km
Mekong River
4,350 km
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
Standing beside it, an average person (1.7 m tall) would reach only about less than 0.001% of its height.
More in Planets
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