Gallon (UK) to Cup (US) Converter
Convert Gallon (UK) (gal (UK)) to Cup (US) (cup) instantly. 1 gal (UK) = 19.215199 cup.
Volume Converter
40 units available
1 gal (UK) = 19.215199 cup
Formula:
cup = gal (UK) × 19.2151988081With your value: 1 gal (UK) = 19.21519881 cup
How big is that?
Everyday references on a logarithmic scale, all expressed in gallon (uk) so you can sanity-check the result.
Other Gallon (UK) to Cup (US) conversions
Gallon (UK) to Cup (US) Conversion Table
| Gallon (UK) (gal (UK)) | Cup (US) (cup) |
|---|---|
| 0.5 | 9.607599 |
| 1 | 19.215199 |
| 2 | 38.430398 |
| 5 | 96.075994 |
| 10 | 192.151988 |
| 15 | 288.227982 |
| 20 | 384.303976 |
| 25 | 480.37997 |
| 50 | 960.75994 |
| 100 | 1,921.519881 |
| 250 | 4,803.799702 |
| 500 | 9,607.599404 |
| 1000 | 19,215.198808 |
Cup (US) to Gallon (UK) Conversion Table
| Cup (US) (cup) | Gallon (UK) (gal (UK)) |
|---|---|
| 0.5 | 0.026021 |
| 1 | 0.052042 |
| 2 | 0.104084 |
| 5 | 0.260211 |
| 10 | 0.520421 |
| 15 | 0.780632 |
| 20 | 1.040843 |
| 25 | 1.301053 |
| 50 | 2.602107 |
| 100 | 5.204214 |
| 250 | 13.010534 |
| 500 | 26.021068 |
| 1000 | 52.042137 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gallon (UK) (gal (UK))
Volume
The imperial gallon is exactly 4.546 09 L (Weights and Measures Act 1985).
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Cup (US) (cup)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Gallon (UK) to Cup (US)
To convert from Gallon (UK) (gal (UK)) to Cup (US) (cup), multiply the value by 19.2151988081.
Formula: cup = gal (UK) × 19.2151988081
Reverse: gal (UK) = cup × 0.0520421365
Step-by-Step Example
- Start with your value in Gallon (UK). For example: 5 gal (UK)
- Multiply by the conversion factor: 5 x 19.2151988081
- The result is: 96.075994 cup
About Gallon (UK)
The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
Common uses: UK fuel figures, brewing, older recipes.
About Cup (US)
The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
Common uses: baking, cooking, recipes.
Frequently Asked Questions
How many Cup (US) are in 1 Gallon (UK)?
There are exactly 19.2151988081 Cup (US) in 1 Gallon (UK). This means the conversion factor from Gallon (UK) to Cup (US) is 19.2151988081.
What is the formula to convert Gallon (UK) to Cup (US)?
The formula to convert Gallon (UK) to Cup (US) is: cup = gal (UK) × 19.2151988081. For example, to convert 10 Gallon (UK) to Cup (US), you would multiply 10 by 19.2151988081.
What is a Gallon (UK)?
The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
What is a Cup (US)?
The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
What are the common uses of Gallon (UK)?
The Gallon (UK) is commonly used in UK fuel figures, brewing, older recipes.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). Gallon (UK) to Cup (US) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gallon_uk-to-cup_us