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

How to convert imperial gallons to US cups

Formulacup = gal (UK) × 19.21519881

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

An imperial gallon is larger than an US cup: one imperial gallon contains 19.21519881 US cups.

Worked examples

1 imperial gallon1 gal (UK) × 19.21519881 = 19.21519881 cup
5 imperial gallons5 gal (UK) × 19.21519881 = 96.07599404 cup
10 imperial gallons10 gal (UK) × 19.21519881 = 192.1519881 cup
20 imperial gallons20 gal (UK) × 19.21519881 = 384.3039762 cup
100 imperial gallons100 gal (UK) × 19.21519881 = 1,921.519881 cup

Imperial gallons to US cups conversion table

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

Imperial gallons to US cups: 0.1–10 gal (UK)
Imperial gallons (gal (UK))	US cups (cup)
0.1 gal (UK)	1.9215199 cup
0.25 gal (UK)	4.8037997 cup
0.5 gal (UK)	9.6075994 cup
1 gal (UK)	19.215199 cup
2 gal (UK)	38.430398 cup
3 gal (UK)	57.645596 cup
4 gal (UK)	76.860795 cup
5 gal (UK)	96.075994 cup
6 gal (UK)	115.29119 cup
7 gal (UK)	134.50639 cup
8 gal (UK)	153.72159 cup
9 gal (UK)	172.93679 cup
10 gal (UK)	192.15199 cup

Imperial gallons to US cups: 12–1,000 gal (UK)
Imperial gallons (gal (UK))	US cups (cup)
12 gal (UK)	230.58239 cup
15 gal (UK)	288.22798 cup
20 gal (UK)	384.30398 cup
25 gal (UK)	480.37997 cup
30 gal (UK)	576.45596 cup
40 gal (UK)	768.60795 cup
50 gal (UK)	960.75994 cup
75 gal (UK)	1,441.1399 cup
100 gal (UK)	1,921.5199 cup
250 gal (UK)	4,803.7997 cup
500 gal (UK)	9,607.5994 cup
1,000 gal (UK)	19,215.199 cup

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

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).

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).

Frequently asked questions

How many US cups are in one imperial gallon?

There are 19.21519881 US cups in one imperial gallon, and this value is exact by definition.

How do I convert imperial gallons to US cups?

Multiply the number of imperial gallons by 19.21519881. For example, 10 gal (UK) × 19.21519881 = 192.1519881 cup.

How many imperial gallons are in one US cup?

One US cup equals 0.05204213654 imperial gallons. That is the reverse factor, 1 ÷ 19.21519881.

What is 10 imperial gallons in US cups?

10 gal (UK) = 192.1519881 cup.

Is this gal (UK) to cup 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.

UK Gallons to Cups Converter