Convert US Gallons to Imperial Gallons
1 US gallon = 0.8326742 imperial gallons. Type any value below to convert in either direction — the calculation happens in your browser.
US Gallons to Imperial Gallons formula
Multiply the number of US gallons by 0.8326742 to get imperial gallons.
imperial gallons = US gallons × 0.8326742To go the other way: divide the number of imperial gallons by 0.8326742, or multiply by 1.20095.
US gallons = imperial gallons ÷ 0.8326742US Gallons to Imperial Gallons conversion table
| US Gallons | Imperial Gallons |
|---|---|
| 1 gal | 0.8326742 imp gal |
| 2 gal | 1.665348 imp gal |
| 3 gal | 2.498023 imp gal |
| 4 gal | 3.330697 imp gal |
| 5 gal | 4.163371 imp gal |
| 6 gal | 4.996045 imp gal |
| 7 gal | 5.828719 imp gal |
| 8 gal | 6.661393 imp gal |
| 9 gal | 7.494068 imp gal |
| 10 gal | 8.326742 imp gal |
| 15 gal | 12.490113 imp gal |
| 20 gal | 16.653484 imp gal |
| 25 gal | 20.816855 imp gal |
| 30 gal | 24.980226 imp gal |
| 40 gal | 33.306967 imp gal |
| 50 gal | 41.633709 imp gal |
| 75 gal | 62.450564 imp gal |
| 100 gal | 83.267418 imp gal |
| 250 gal | 208.168546 imp gal |
| 500 gal | 416.337092 imp gal |
| 1,000 gal | 832.674185 imp gal |
Imperial Gallons to US Gallons conversion table
| Imperial Gallons | US Gallons |
|---|---|
| 1 imp gal | 1.20095 gal |
| 2 imp gal | 2.4019 gal |
| 3 imp gal | 3.60285 gal |
| 4 imp gal | 4.8038 gal |
| 5 imp gal | 6.00475 gal |
| 6 imp gal | 7.2057 gal |
| 7 imp gal | 8.406649 gal |
| 8 imp gal | 9.607599 gal |
| 9 imp gal | 10.808549 gal |
| 10 imp gal | 12.009499 gal |
About the US gallon
A US liquid gallon is exactly 3.785411784 litres, or 128 fluid ounces.
About the imperial gallon
An imperial gallon is exactly 4.54609 litres — about 20% larger than a US gallon.
Frequently asked questions
How many imperial gallons are in a US gallon?
There are 0.8326742 imperial gallons in one US gallon.
How many US gallons are in a imperial gallon?
There are 1.20095 US gallons in one imperial gallon.
Is this conversion exact?
The ratio between the US gallon and the imperial gallon is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 US gallons in imperial gallons?
10 US gallons equals 8.326742 imperial gallons.
Related volume conversions
- Liters to Imperial Gallons
- Milliliters to Imperial Gallons
- Cubic Meters to Imperial Gallons
- Cubic Centimeters to Imperial Gallons
- US Gallons to Liters
- US Gallons to Milliliters
- US Gallons to Cubic Meters
- US Gallons to Cubic Centimeters
- US Gallons to US Quarts
- US Gallons to US Pints
- US Gallons to US Cups
- US Gallons to US Fluid Ounces
- US Gallons to Tablespoons
- US Gallons to Teaspoons