Room for ChanceWhat it measures and where it is used
Volume measures three-dimensional space or capacity. The SI unit is the cubic metre; the litre is accepted for use with SI and equals one cubic decimetre. US and imperial gallons arose from different systems and are not interchangeable. Fluid ounces measure volume, not mass.
- Classification
- SI derived quantity
- SI unit
- m³
- Dimension
- L³
L: length; M: mass; T: time; Θ: temperature; N: amount of substance. The dimension symbol N is not the unit symbol for newton.
How it works
The calculation first converts to a common reference unit, then to the destination unit. Factors in the table show the reference value for one unit.
Example
1 gal (US) ≈ 3.785411784 L
Available units
Reference unit: L
| Available units | Reference factor |
|---|---|
| L | 1 × x |
| mL | 0.001 × x |
| cL | 0.01 × x |
| dL | 0.1 × x |
| m³ | 1,000 × x |
| cm³ | 0.001 × x |
| in³ | 0.016387064 × x |
| ft³ | 28.316846592 × x |
| gal (US) | 3.785411784 × x |
| gal (UK) | 4.54609 × x |
| qt (US) | 0.946352946 × x |
| pt (US) | 0.473176473 × x |
| pt (UK) | 0.56826125 × x |
| fl oz (US) | 0.0295735295625 × x |
| fl oz (UK) | 0.0284130625 × x |
Units, history and conventions
The International System of Units (SI) received its name in 1960. Since the 2019 revision, its definitions use fixed values of seven defining constants. SI base and derived quantities should not be confused with the different units used to express them.