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⚡ US Cups to Imperial Gallons: the quick answer
1 cup = 0.0520421 gal-uk
1 US cup equals 0.0520421 imperial gallons
To convert US cups to imperial gallons, multiply the value by 0.0520421.
To go the other way, multiply imperial gallons by 19.2152 to get US cups.
↔ Convert imperial gallons to US cups instead
🧮 Formula
Every unit here is defined by its volume in cubic meters, so the conversion factor is (cubic meters per US cup) ÷ (cubic meters per imperial gallon).
📊 US Cups to Imperial Gallons conversion table
✏️ Worked examples
Convert 25 US cups to imperial gallons
25 cup × 0.0520421 = 1.30105 gal-uk
Try this example →
Convert 250 US cups to imperial gallons
250 cup × 0.0520421 = 13.0105 gal-uk
Try this example →
📘 About these units
US cup (cup). A US customary cup is 8 fluid ounces (236.588 mL).
Imperial gallon (gal-uk). The imperial gallon is exactly 4.54609 liters, used in the UK and in some Commonwealth countries.
❓ Frequently asked questions
How many imperial gallons are in one US cup?
There are 0.0520421 imperial gallons in one US cup.
How do I convert US cups to imperial gallons?
Multiply the number of US cups by 0.0520421. For example, 10 US cups equal 0.520421 imperial gallons.
How many US cups are in one imperial gallon?
One imperial gallon equals 19.2152 US cups.
🔗 More volume conversions
All volume units →