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Volume

Convert cups to UK gallons

1 cup=0.05279gal (UK)

Use the converter below to change any cups value into UK gallons instantly — with formula, conversion table, and real-world examples.

0.052793

Conversion formula

Forward
UK gallons = cups × 0.05279
Reverse
cups = UK gallons × 18.942

Example: 10 cup × 0.05279 = 0.5279 gal (UK).

About both units

From

Cup

cup

The US cup equals 240 millilitres in common usage (legally defined as 236.588 ml). The metric cup (Australia, NZ) is 250 ml; the UK "cup" is 284 ml but rarely used in recipes. Cooking recipes from the US dominate online, so 240 ml is the safe default for "cup".

Real-world: 1 cup of water = 240 g = 240 ml. 1 cup of all-purpose flour weighs about 125 g. A Starbucks Tall is 12 fl oz = 1.5 cups.
Read full cup reference →
To

UK Gallon

gal (UK)

The UK imperial gallon equals 4.54609 litres exactly. Defined in 1824 as the volume of 10 pounds of water at 62 °F. Still used for fuel economy reporting in the UK and some older industrial contexts. The UK imperial gallon is about 20% larger than the US gallon.

Real-world: UK petrol sold by litre since 1995, but economy is quoted in UK mpg: a diesel car at 60 mpg (UK) uses 4.7 L/100 km.
Read full uk gallon reference →

Cup to UK Gallon conversion table

Common cups to UK gallons values for quick reference.

Cup (cup)UK Gallon (gal (UK))
1 cup0.05279 gal (UK)
2 cup0.1056 gal (UK)
5 cup0.264 gal (UK)
10 cup0.5279 gal (UK)
20 cup1.05585 gal (UK)
50 cup2.63963 gal (UK)
100 cup5.27926 gal (UK)
200 cup10.5585 gal (UK)
500 cup26.3963 gal (UK)
1,000 cup52.7926 gal (UK)

Tips & common mistakes

Quick tips

  • US cup = 240 ml common; 236.6 ml legal; UK cup = 284 ml; metric cup (AU/NZ) = 250 ml.
  • Weights (grams) are more reliable than cups — a cup of flour can vary 30% depending on how packed.
  • For baking, always use the recipe author's country convention.

Avoid these

  • Using a UK 284 ml cup for a US recipe calling for 240 ml — 18% overshoot.
  • Treating all dry ingredients as 1 cup = 240 g — only true for water.
  • Using a coffee mug as a "cup" — mugs vary 200–400 ml.

Frequently asked questions

How many UK gallons in a cup?
One cup equals 0.05279 UK gallons.
How do I convert cups to UK gallons?
Multiply the cup value by 0.05279 to get the equivalent in UK gallons.
What is 100 cups in UK gallons?
100 cups equals 5.27926 UK gallons.
Is a cup bigger than a uk gallon?
No. 1 cup equals 0.05279 UK gallons, so one cup is smaller.
How to convert cups to UK gallons without a calculator?
Multiply by 0.05 for a quick estimate; use a calculator for precise results.

Related volume conversions

📊 See full comparison matrix →

More from Cup

cup → L
1 = 0.24 L
cup → ml
1 = 240 ml
cup → m³
1 = 0.00024 m³
cup → gal (US)
1 = 0.0634 gal (US)
cup → fl oz
1 = 8.11537 fl oz
cup → pt
1 = 0.5072 pt
cup → qt
1 = 0.2536 qt
cup → tbsp
1 = 16.2162 tbsp

More to UK Gallon

L → gal (UK)
1 = 0.22 gal (UK)
ml → gal (UK)
1 = 0.00022 gal (UK)
m³ → gal (UK)
1 = 219.969 gal (UK)
gal (US) → gal (UK)
1 = 0.8327 gal (UK)
fl oz → gal (UK)
1 = 0.006505 gal (UK)
pt → gal (UK)
1 = 0.1041 gal (UK)
qt → gal (UK)
1 = 0.2082 gal (UK)
tbsp → gal (UK)
1 = 0.003256 gal (UK)

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