Imperial Gallons to Litres
Convert imperial gallons (gal) to litres (L) instantly — with formula and reference table.
gal
L
Quick answer: 1 gal = 4.54609 L. To convert imperial gallons to litres, multiply by gal × 4.54609.
Converting imperial gallons to litres
This converter changes a value in imperial gallons (gal) into litres (L). One imperial gallon equals 4.54609 L. One imperial (UK) gallon equals 4.54609 litres, larger than the US gallon of 3.785 litres. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
L = gal × 4.54609
Example
Convert 10 gal to L: 10 × 4.54609 = 45.4609 L.
Imperial Gallons to Litres conversion table
| Imperial Gallons (gal) | Litres (L) |
|---|---|
| 1 gal | 4.54609 L |
| 2 gal | 9.09218 L |
| 3 gal | 13.63827 L |
| 5 gal | 22.73045 L |
| 10 gal | 45.4609 L |
| 20 gal | 90.9218 L |
| 25 gal | 113.65225 L |
| 50 gal | 227.3045 L |
| 100 gal | 454.609 L |
How to use this converter
- Enter a value in the imperial gallons (gal) field.
- Read the converted value in litres (L) below.
- Type into the L field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many litres are in an imperial gallon?
1 imperial gallon equals 4.54609 litres.
How do I convert 10 imperial gallons to litres?
10 times 4.54609 = 45.46 litres.
How is the imperial gallon different from the US gallon?
The imperial gallon (4.546 L) is about 20 percent larger than the US gallon (3.785 L).