US Gallons to UK Gallons (US gal to Imperial gal) Converter

Enter US gallons to get UK (imperial) gallons.

1 US gallon ≈ 0.832674 UK gallons

From
To
0.8326741846
Try:
Step-by-stepUS gal → UK gal
11 US gal = 0.8326741846 UK galformula
21 × 0.8326741846substitute
3≈ 0.8326741846 UK galresult
URLiunitconverter.com/volume/gallons-to-uk-gallons?value=1Open
1 US gal in every unit
ml
Milliliter
1 ml = 1 cm³
3,785.4118 ml
L
Liter
1 L = 1,000 ml
3.7854118 L
m³
Cubic meter
1 m³ = 1,000 L
0.0037854118 m³
tsp
Teaspoon
US teaspoon ≈ 4.93 ml
768 tsp
tbsp
Tablespoon
US tablespoon = 3 tsp
256 tbsp
US fl oz
US fluid ounce
1/128 US gallon
128 US fl oz
US cup
US cup
US cup = 8 US fl oz
16 US cup
metric cup
Metric cup
AU / NZ / CA recipes
15.141647 metric cup
US pt
US pint
US pint = 16 US fl oz
8 US pt
US qt
US quart
US quart = 2 US pints
4 US qt
US gal
US gallon
231 cubic inches
1 US gal
UK fl oz
UK fluid ounce
1/160 UK gallon
133.22787 UK fl oz
UK pt
UK pint
UK pint = 20 UK fl oz
6.6613935 UK pt
UK gal
UK gallon
4.54609 L exactly
0.83267418 UK gal

US gallons to UK gallons Formula

UK gallons = US gallons × 0.8326741846

One US gallon is 0.8326741846 UK gallons. For example, 10 US gal × 0.8326741846 = 8.326742 UK gal.

Comparing US and UK Fuel Economy

The same car gets a lower mpg figure in the US than in the UK because the US gallon is smaller. Divide US mpg by 0.8327 to get UK mpg.

US mpgUK mpg
2024
2530
3036
3542
4048
5060

Same Name, Different Size

UnitUSUK
Gallon3.785 L4.546 L
Pint473.2 ml568.3 ml
Fluid ounce29.57 ml28.41 ml
Fluid ounces per pint1620

Oddly, the US fluid ounce is larger than the UK one, but the US pint and gallon are smaller because they contain fewer fluid ounces.

US gallons to UK gallons Table

US gallons (US gal)UK gallons (UK gal)
1 US gal0.8327 UK gal
2 US gal1.6653 UK gal
3 US gal2.498 UK gal
4 US gal3.3307 UK gal
5 US gal4.1634 UK gal
6 US gal4.996 UK gal
10 US gal8.3267 UK gal
12 US gal9.9921 UK gal
15 US gal12.4901 UK gal
20 US gal16.6535 UK gal
25 US gal20.8169 UK gal
50 US gal41.6337 UK gal
100 US gal83.2674 UK gal

Common Questions

Is a US gallon smaller than a UK gallon?
Yes. A US gallon is about 83% of a UK gallon (3.785 L vs 4.546 L).
How many UK gallons is 10 US gallons?
10 US gallons is 8.327 UK gallons.
How do I convert US mpg to UK mpg?
Multiply US mpg by 1.201. 30 US mpg is about 36 UK mpg.
Why is the US fluid ounce bigger but the US pint smaller?
A US pint is 16 US fluid ounces; a UK pint is 20 UK fluid ounces. The extra four ounces more than make up for each UK ounce being slightly smaller.