Volume Converter
Converts volume and capacity between metric, US and imperial units. Watch the gallons: a US gallon is 3.785 litres and an imperial gallon is 4.546, so the same number means about 20% more liquid in the UK.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
result = value × (from factor ÷ to factor)
Each volume unit is defined by its size relative to the cubic metre, so converting between any two is a single multiplication.
Every volume unit
| Unit | Symbol | In one cubic metre |
|---|---|---|
| millilitre | ml | 1,000,000 |
| litre | L | 1,000 |
| cubic metre | m³ | 1 |
| cubic centimetre | cm³ | 1,000,000 |
| cubic inch | in³ | 61,023.744 |
| cubic foot | ft³ | 35.314667 |
| cubic yard | yd³ | 1.3079506 |
| US gallon | gal | 264.17205 |
| imperial gallon | gal | 219.96925 |
| US quart | qt | 1,056.6882 |
| US pint | pt | 2,113.3764 |
| US fluid ounce | fl oz | 33,814.023 |
| US cup | cup | 4,226.7528 |
Frequently Asked Questions
Is a US gallon the same as a UK gallon?
No. A US gallon is 3.785411784 litres; an imperial (UK) gallon is 4.54609 litres — about 20% larger. Both are listed separately here.
How many litres are in a cubic metre?
Exactly 1,000. A cubic metre is the volume of a 1 m cube, and a litre is defined as one cubic decimetre.
How many cubic feet in a cubic yard?
27, since a yard is 3 feet and 3³ = 27. A cubic yard is 0.7646 cubic metres, which is why concrete is ordered in whole yards in the US and whole metres elsewhere.