About the Units
cubic kilometer (km³)
A large volume unit equal to 10^9 cubic meters, used in geological and geographical measurements.
Learn more about cubic kilometers
cubic zettameter (Zm³)
A massive volume unit equal to 10^63 cubic meters.
Common Conversions
- 1 km³ = 0.0 Zm³
- 3.4028237e38 km³ = 1 Zm³