Convert US Gallon to Cubic Metre
Instantly convert US Gallon (gal (US)) to Cubic Metre (m³). Free and accurate.
About This Conversion
What is a US Gallon to Cubic Metre conversion?
One us gallon (gal (US)) is equal to 0.0037854118 cubic metre (m³). This relationship is fixed by international measurement standards and does not change. To convert any number of us gallon to cubic metre, multiply your value by 0.0037854118; to go the other way, divide by 0.0037854118.
How to convert US Gallon to Cubic Metre
The conversion formula is: 1 gal (US) = 0.0037854118 m³. Enter any value into the converter above and the result updates instantly. The formula is also shown alongside the answer so you can check the working or use it in your own calculations.
Where is this conversion used?
Volume conversions appear in cooking, chemistry, medicine, fuel measurement, and plumbing. The metric system uses litres and millilitres; the imperial system uses pints, gallons, and fluid ounces — and US and UK gallons differ from one another. Pharmacists, bartenders, chemists, plumbers, and fuel engineers routinely convert volumes. Note that a US gallon (3.785 L) and a UK/Imperial gallon (4.546 L) are not the same — always confirm which gallon is intended.
Helpful tip
A standard wine bottle holds 750 mL (0.75 L). A US pint of beer is 473 mL, while a UK pint is 568 mL — nearly 20% larger.
Formula
1 gal (US) = 0.0037854118 m³
gal (US) to m³ Conversion Table
| gal (US) | m³ |
|---|---|
| 0.1 gal (US) | 0.0003785412 m³ |
| 0.5 gal (US) | 0.0018927059 m³ |
| 1 gal (US) | 0.0037854118 m³ |
| 2 gal (US) | 0.0075708236 m³ |
| 5 gal (US) | 0.0189270589 m³ |
| 10 gal (US) | 0.0378541178 m³ |
| 20 gal (US) | 0.0757082357 m³ |
| 25 gal (US) | 0.0946352946 m³ |
| 50 gal (US) | 0.1892705892 m³ |
| 100 gal (US) | 0.3785411784 m³ |
| 250 gal (US) | 0.946352946 m³ |
| 500 gal (US) | 1.89270589 m³ |
| 1000 gal (US) | 3.78541178 m³ |