Convert US cups to imperial gallons
1 US cup = 0.052042 imperial gallons · imp gal = cup ÷ 19.21519881
When you need this conversion
This conversion goes from US cups, the volume-based measure central to American recipes, to imperial gallons, the UK volume unit about 20 percent larger than a US gallon. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
US cups to imperial gallons conversion table
| US cups (cup) | Imperial gallons (imp gal) |
|---|---|
| 1 cup | 0.052042 imp gal |
| 2 cup | 0.104084 imp gal |
| 3 cup | 0.156126 imp gal |
| 5 cup | 0.260211 imp gal |
| 10 cup | 0.520421 imp gal |
| 15 cup | 0.780632 imp gal |
| 20 cup | 1.0408 imp gal |
| 25 cup | 1.3011 imp gal |
| 50 cup | 2.6021 imp gal |
| 75 cup | 3.9032 imp gal |
| 100 cup | 5.2042 imp gal |
| 250 cup | 13.0105 imp gal |
| 500 cup | 26.0211 imp gal |
| 1,000 cup | 52.0421 imp gal |
The formula
imp gal = cup ÷ 19.21519881Because both units measure volume, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Imperial gallons to US cups →Related volume conversions
- US cups to milliliters
- Milliliters to US cups
- Milliliters to US fluid ounces
- Liters to cubic meters
- Liters to US gallons
- Cubic meters to liters
- Cubic meters to cubic feet
- Cubic feet to cubic meters
- US gallons to liters
- US fluid ounces to milliliters
- Milliliters to imperial gallons
- Liters to imperial gallons
Frequently asked questions
- How many imperial gallons are in a US cup?
- There are 0.052042 imperial gallons in 1 US cup. The formula is imp gal = cup ÷ 19.21519881.
- How do you convert US cups to imperial gallons?
- Use the formula imp gal = cup ÷ 19.21519881. For example, 10 US cups equals 0.520421 imperial gallons.
- Is the US cups to imperial gallons conversion exact?
- Yes. US cups and imperial gallons are both units of volume, related by an exact defined factor. Displayed results are rounded for readability.
- What is cup short for?
- cup is the standard symbol for US cup. imp gal is the symbol for imperial gallon.