US cup to Imperial gallon Converter
Type a value — the answer appears instantly. 1 cup = 0.0520421 gal (UK).
Reviewed by the OmniCalc teamMethod verified 2026-07-01
0.0520421 imperial gallons
= 0.236588 L= 236.588 ml
equals 0.0520421 imperial gallonsFormula: gal (UK) = cup × 0.052042137
US cup to Imperial gallon formula
gal (UK) = cup × 0.052042137
Convert 5 US cups to imperial gallons
- Start with 5 US cups.
- Multiply by the conversion factor: 5 × 0.0520421 = 0.260211.
- So 5 cup = 0.260211 gal (UK).
US cup to Imperial gallon conversion table
| US cups (cup) | Imperial gallons (gal (UK)) |
|---|---|
| 0.01 cup | 0.000520421 gal (UK) |
| 0.1 cup | 0.00520421 gal (UK) |
| 0.25 cup | 0.0130105 gal (UK) |
| 0.5 cup | 0.0260211 gal (UK) |
| 1 cup | 0.0520421 gal (UK) |
| 2 cup | 0.104084 gal (UK) |
| 3 cup | 0.156126 gal (UK) |
| 4 cup | 0.208169 gal (UK) |
| 5 cup | 0.260211 gal (UK) |
| 6 cup | 0.312253 gal (UK) |
| 7 cup | 0.364295 gal (UK) |
| 8 cup | 0.416337 gal (UK) |
| 9 cup | 0.468379 gal (UK) |
| 10 cup | 0.520421 gal (UK) |
| 15 cup | 0.780632 gal (UK) |
| 20 cup | 1.04084 gal (UK) |
| 25 cup | 1.30105 gal (UK) |
| 30 cup | 1.56126 gal (UK) |
| 40 cup | 2.08169 gal (UK) |
| 50 cup | 2.60211 gal (UK) |
| 75 cup | 3.90316 gal (UK) |
| 100 cup | 5.20421 gal (UK) |
| 250 cup | 13.0105 gal (UK) |
| 500 cup | 26.0211 gal (UK) |
| 1,000 cup | 52.0421 gal (UK) |
| 5,000 cup | 260.211 gal (UK) |
| 10,000 cup | 520.421 gal (UK) |
Unit definitions
What is a US cup?
The US customary cup is one sixteenth of a US gallon, about 236.59 millilitres. It is the standard volume measure in American home cooking and baking. It equals eight US fluid ounces.
What is a imperial gallon?
The imperial (UK) gallon is defined as exactly 4.54609 litres. It is used for fuel economy and liquid volumes in the United Kingdom and some Commonwealth countries. It is larger than the US gallon.
Frequently asked questions
How many imperial gallons are in one US cup?
One US cup equals 0.0520421 imperial gallons (1 cup = 0.0520421 gal (UK)).
How do I convert US cups to imperial gallons?
Multiply the value in US cups by 0.0520421. For example, 10 cup × 0.0520421 = 0.520421 gal (UK).
Which is bigger — a US cup or a imperial gallon?
A imperial gallon is bigger: one imperial gallon contains 19.215 US cups.
Is this US cup to imperial gallon converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.