Convert US gallon to imperial gallon

1 gal = 0.8326741846 imp gal

1 gal = 0.83267 imp gal
1 gal in every volume unit
cubic millimeter3,785,400 mm³
microliter3,785,400 μL
milliliter3,785.4 mL
cubic centimeter3,785.4 cm³
US teaspoon768 tsp
centiliter378.54 cL
US tablespoon256 tbsp
cubic inch231 in³
imperial fluid ounce133.23 imp fl oz
US fluid ounce128 fl oz
deciliter37.854 dL
US cup16 cup
US pint8 pt
imperial pint6.6614 imp pt
US quart4 qt
liter3.7854 L
cubic decimeter3.7854 dm³
imperial quart3.3307 imp qt
board foot1.6042 fbm
US gallon1 gal
imperial gallon0.83267 imp gal
cubic foot0.13368 ft³
US bushel0.10742 bu
hectoliter0.037854 hL
US beer barrel0.032258 bbl beer
oil barrel0.02381 bbl
cubic yard0.0049511 yd³
cubic meter0.0037854 m³
kiloliter0.0037854 kL
hundred cubic feet0.0013368 CCF
cord0.0010444 cord
acre-foot0.0000030689 ac·ft
million US gallons0.000001 MG
cubic kilometer3.7854e-12 km³
How the conversion works

Multiply by 0.8326741846 to go from US gallon to imperial gallon, or divide by it to go back. Every conversion on this site routes through the SI value (m³) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.

Going the other way? imperial gallon to US gallon — 1 imp gal = 1.200949926 gal.

US gallon to imperial gallon — common values
1 gal0.83267418 imp gal
2 gal1.6653484 imp gal
3 gal2.4980226 imp gal
5 gal4.1633709 imp gal
10 gal8.3267418 imp gal
15 gal12.490113 imp gal
20 gal16.653484 imp gal
25 gal20.816855 imp gal
50 gal41.633709 imp gal
75 gal62.450564 imp gal
100 gal83.267418 imp gal
250 gal208.16855 imp gal
500 gal416.33709 imp gal
1000 gal832.67418 imp gal