volume · International · Modern
Non-SI unit accepted for use with the SI; 1 L = 1 dm³ = 10⁻³ m³.
Converter
volume · International · Modern
cubic kilometre
km³exact
- Record
- M674
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 km³ = (1000 m)³ = exactly 10^9 m³ (one billion cubic metres).
Reference value
One cubic kilometre is exactly 1,000,000,000 cubic metres.
History & use
A coherent SI-derived volume formed by cubing the kilometre; it follows directly from the SI definition of the metre.
Modern use
Used for very large volumes: volcanoes and mountains, lakes and reservoirs, glacier and ice-sheet loss, groundwater and annual river discharge.
Did you know?
One cubic kilometre holds a trillion litres — 400,000 Olympic-pool reference volumes of 2,500 m³.
Sources & evidence
Source tier Tier A · confidence High
Related measurements
volume · International · Modern
1 mL = 10^-3 L = 10^-6 m³.
volume · International · Modern
Coherent SI derived unit for volume, equal to metre cubed.
fluid ounce (US)
fl oz (US)volume · UK / US · Modern / historical
1 U.S. fluid ounce = 1/128 U.S. gallon = 29.5735295625 mL.
fluid ounce (Imperial)
fl oz (Imp)volume · UK / US · Modern / historical
1 Imperial fluid ounce = 1/160 Imperial gallon = 28.4130625 mL.
cup (US customary)
cup (US)volume · UK / US · Modern / historical
1 U.S. customary cup = 8 U.S. fluid ounces = 236.5882365 mL.
pint (US liquid)
pt (US liq)volume · UK / US · Modern / historical
1 U.S. liquid pint = 1/8 U.S. gallon = 0.473176473 L.
pint (Imperial)
pt (Imp)volume · UK / US · Modern / historical
1 Imperial pint = 1/8 Imperial gallon = 0.56826125 L.