Planets · #66 biggest of 1,014
How big is Iapetus (moon)?
1,469 km
Iapetus (moon) measures 1,469 km. That's about 166 Mount Everests lined up end to end.
By the numbers
- That's 1,469 km, or about 913 miles.
- It's about 864,118 times taller than an average adult (1.7 m).
- Roughly 166 Mount Everests could line up across it.
- Walking nonstop, you'd need about 12 days to travel its length.
- Out of all 1,014 things in this collection, it ranks #66 by size.
Size comparison
How Iapetus (moon) stacks up against things of a similar size. Tap any bar to explore it.
Eris (dwarf planet)
2,326 km
Titania (moon)
1,578 km
Rhea (moon)
1,527 km
Oberon (moon)
1,523 km
Iapetus (moon)
1,469 km
Makemake (dwarf planet)
1,430 km
Rhine River
1,233 km
Charon (moon)
1,212 km
Umbriel (moon)
1,169 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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