Convert Imperial Gallons to US Gallons
1 imperial gallon = 1.20095 US gallons. Type any value below to convert in either direction — the calculation happens in your browser.
Imperial Gallons to US Gallons formula
Multiply the number of imperial gallons by 1.20095 to get US gallons.
US gallons = imperial gallons × 1.20095To go the other way: divide the number of US gallons by 1.20095, or multiply by 0.8326742.
imperial gallons = US gallons ÷ 1.20095Imperial 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 |
| 15 imp gal | 18.014249 gal |
| 20 imp gal | 24.018999 gal |
| 25 imp gal | 30.023748 gal |
| 30 imp gal | 36.028498 gal |
| 40 imp gal | 48.037997 gal |
| 50 imp gal | 60.047496 gal |
| 75 imp gal | 90.071244 gal |
| 100 imp gal | 120.094993 gal |
| 250 imp gal | 300.237481 gal |
| 500 imp gal | 600.474963 gal |
| 1,000 imp gal | 1,200.95 gal |
US 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 |
About the imperial gallon
An imperial gallon is exactly 4.54609 litres — about 20% larger than a US gallon.
About the US gallon
A US liquid gallon is exactly 3.785411784 litres, or 128 fluid ounces.
Frequently asked questions
How many US gallons are in a imperial gallon?
There are 1.20095 US gallons in one imperial gallon.
How many imperial gallons are in a US gallon?
There are 0.8326742 imperial gallons in one US gallon.
Is this conversion exact?
The ratio between the imperial gallon and the US gallon is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 imperial gallons in US gallons?
10 imperial gallons equals 12.009499 US gallons.
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