Volume · gal → imp gal
US gallons to Imperial gallons
Enter any value below to convert us gallons to imperial gallons instantly.
To
1 gal = 0.83267418 imp gal
Conversion formula
How to convert gal to imp gal
imp gal = gal × 0.83267418
Multiply the us gallons value by 0.83267418 to get imperial gallons. The converter keeps extra precision internally and rounds only the displayed answer.
Converting us gallons to imperial gallons helps with cooking, fuel, containers, aquariums and liquid product specifications.
Worked example
Convert 10 gal10 gal = 8.326742 imp gal
Calculated with the published formula. No estimated exchange rates or hidden rounding.
Common us gallons to imperial gallons values
| US gallons (gal) | Imperial gallons (imp gal) |
|---|---|
| 1 gal | 0.83267418 imp gal |
| 5 gal | 4.163371 imp gal |
| 10 gal | 8.326742 imp gal |
| 25 gal | 20.816855 imp gal |
| 50 gal | 41.633709 imp gal |
| 100 gal | 83.267418 imp gal |
Quick answer
How many imperial gallons are in one us gallon?
One us gallon equals 0.83267418 imp gal.