Gallons (UK) to Gallons (US) converter
Convert gallons (uk) (gal (UK)) to gallons (us) (gal) — results update instantly as you type.
Gallons (UK) to Gallons (US)
1 gal (UK) = 1.20094993 gal
How to convert Gallons (UK) to Gallons (US)
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 (UK) × 1.2009499255 = gal
Multiply your gallons (uk) value by 1.2009499255 to get gallons (us). For the reverse, divide by the same factor.
Gallons (UK) to Gallons (US) conversion table
| Gallons (UK) | Gallons (US) |
|---|---|
| 1 gal (UK) | 1.20095 gal |
| 2 gal (UK) | 2.4019 gal |
| 5 gal (UK) | 6.00475 gal |
| 10 gal (UK) | 12.009499 gal |
| 25 gal (UK) | 30.023748 gal |
| 100 gal (UK) | 120.094993 gal |
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.