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 millimeter (mm³)
A tiny volume unit equal to 1/1,000,000,000 cubic meter, used in microscopic measurements.
Common Conversions
- 1 km³ = 999999800000000000.0 mm³
- 1.0000001e-18 km³ = 1 mm³