Convert Imperial Gallons to Cups
Convert Imperial Gallons (UK gal) to Cups (cup) instantly and accurately.
Conversion Formula
cup = UK gal × 19.21519881
About Imperial Gallons
A US imperial gallon (UK gal) = exactly 8 imperial pints or 10 lb of pure water at 62°F ≈ 4.546 L - about 20% larger than the US liquid gallon (3.785 L). The weight-based definition made it verifiable with simple scales. Still the legal fuel measure in the Cayman Islands and other British Overseas Territories. UK mpg ratings use imperial gallons: 50 UK mpg ≈ 42 US mpg. 1 UK gal ≈ 4.546 L.
About Cups
A cup = 8 fl oz = 16 tbsp ≈ 236.6 mL - the fundamental unit of American cooking. Almost every US recipe uses cups for dry and liquid ingredients. The US customary cup (236.588 mL) differs from the US legal cup (240 mL, used in nutrition labelling) and the metric cup (Australia/Canada: 250 mL). Kitchen sets come in 1/4, 1/3, 1/2, and 1 cup sizes. 2 cups = 1 US pint.
Quick Reference Table
| Imperial Gallons (UK gal) | Cups (cup) |
|---|---|
| 1 UK gal | 19.2152 cup |
| 2 UK gal | 38.4304 cup |
| 5 UK gal | 96.076 cup |
| 10 UK gal | 192.152 cup |
| 25 UK gal | 480.38 cup |
| 50 UK gal | 960.76 cup |
| 100 UK gal | 1921.52 cup |