Cups to UK Gallons Converter (cup to gal (UK))

How to convert US cups to imperial gallons

Formulagal (UK) = cup × 0.05204213654

Multiply the value in US cups by 0.05204213654. To go the other way, multiply by 19.21519881 (or divide by 0.05204213654).

An US cup is smaller than an imperial gallon: it takes 19.21519881 US cups to make one imperial gallon.

Worked examples

1 US cup1 cup × 0.05204213654 = 0.05204213654 gal (UK)
5 US cups5 cup × 0.05204213654 = 0.2602106827 gal (UK)
10 US cups10 cup × 0.05204213654 = 0.5204213654 gal (UK)
20 US cups20 cup × 0.05204213654 = 1.040842731 gal (UK)
100 US cups100 cup × 0.05204213654 = 5.204213654 gal (UK)

US cups to imperial gallons conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

US cups to imperial gallons: 0.1–10 cup
US cups (cup)	Imperial gallons (gal (UK))
0.1 cup	0.0052042137 gal (UK)
0.25 cup	0.013010534 gal (UK)
0.5 cup	0.026021068 gal (UK)
1 cup	0.052042137 gal (UK)
2 cup	0.10408427 gal (UK)
3 cup	0.15612641 gal (UK)
4 cup	0.20816855 gal (UK)
5 cup	0.26021068 gal (UK)
6 cup	0.31225282 gal (UK)
7 cup	0.36429496 gal (UK)
8 cup	0.41633709 gal (UK)
9 cup	0.46837923 gal (UK)
10 cup	0.52042137 gal (UK)

US cups to imperial gallons: 12–1,000 cup
US cups (cup)	Imperial gallons (gal (UK))
12 cup	0.62450564 gal (UK)
15 cup	0.78063205 gal (UK)
20 cup	1.0408427 gal (UK)
25 cup	1.3010534 gal (UK)
30 cup	1.5612641 gal (UK)
40 cup	2.0816855 gal (UK)
50 cup	2.6021068 gal (UK)
75 cup	3.9031602 gal (UK)
100 cup	5.2042137 gal (UK)
250 cup	13.010534 gal (UK)
500 cup	26.021068 gal (UK)
1,000 cup	52.042137 gal (UK)

Converting cups and spoons to grams

Volume and weight are different quantities: a cup of flour weighs about 120 g, a cup of sugar about 198 g and a cup of water about 236 g. To convert cups or spoons to grams for a specific ingredient, use the cups to grams converter — popular: flour, sugar, butter, tablespoons of butter.

About the units

US cup (cup)

The US customary cup is half a US pint, 236.5882365 mL (8 US fl oz). US nutrition labels instead use a “legal cup” of exactly 240 mL. One US cup equals 0.0002365882365 cubic meters (m³).

Imperial gallon (gal (UK))

Exactly 4.54609 L, about 1.2 US gallons. Used in the UK for fuel economy (mpg) figures. One imperial gallon equals 0.00454609 cubic meters (m³).

Frequently asked questions

How many imperial gallons are in one US cup?

There are 0.05204213654 imperial gallons in one US cup, and this value is exact by definition.

How do I convert US cups to imperial gallons?

Multiply the number of US cups by 0.05204213654. For example, 10 cup × 0.05204213654 = 0.5204213654 gal (UK).

How many US cups are in one imperial gallon?

One imperial gallon equals 19.21519881 US cups. That is the reverse factor, 1 ÷ 0.05204213654.

What is 10 US cups in imperial gallons?

10 cup = 0.5204213654 gal (UK).

Is this cup to gal (UK) converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Cups to UK Gallons Converter