Gallons (US) to Cubic Meters converter
Convert gallons (us) (gal) to cubic meters (m³) — results update instantly as you type.
Gallons (US) to Cubic Meters
1 gal = 0.00378541 m³
How to convert Gallons (US) to Cubic Meters
Volume conversions appear constantly in cooking, fuel, and science. The metric system uses milliliters and liters, while the US uses cups, pints, quarts, and gallons — and the UK gallon is a different size entirely.
All units convert through the liter. One US gallon is exactly 3.785411784 liters, while a UK (imperial) gallon is 4.54609 liters — about 20% larger. One cubic meter equals exactly 1,000 liters.
Formula
gal × 0.0037854118 = m³
Multiply your gallons (us) value by 0.0037854118 to get cubic meters. For the reverse, divide by the same factor.
Gallons (US) to Cubic Meters conversion table
| Gallons (US) | Cubic Meters |
|---|---|
| 1 gal | 0.003785 m³ |
| 2 gal | 0.007571 m³ |
| 5 gal | 0.018927 m³ |
| 10 gal | 0.037854 m³ |
| 25 gal | 0.094635 m³ |
| 100 gal | 0.378541 m³ |
Common use cases
- Recipes between cups, milliliters, and fluid ounces
- Fuel and liquid purchases between gallons and liters
- Water tanks and pools in cubic meters
- Beverage servings in pints vs half-liters
Frequently asked questions
One US gallon equals exactly 3.785411784 liters. A UK imperial gallon is larger at 4.54609 liters.