Convert US cups to Gallon (UK)
Western Europe · UK vs US Volume · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 US cup = 0.0520421 Gallon (UK)
Gallon (UK) = US cups × 0.052042137
Convert any amount
US cups to Gallon (UK) table
| US cups | Gallon (UK) |
|---|---|
| 0.25 US cups | 0.0130105 Gallon (UK) |
| 0.5 US cups | 0.0260211 Gallon (UK) |
| 1 US cup | 0.0520421 Gallon (UK) |
| 2 US cups | 0.104084 Gallon (UK) |
| 3 US cups | 0.156126 Gallon (UK) |
| 4 US cups | 0.208169 Gallon (UK) |
| 5 US cups | 0.260211 Gallon (UK) |
| 10 US cups | 0.520421 Gallon (UK) |
| 20 US cups | 1.04084 Gallon (UK) |
| 25 US cups | 1.30105 Gallon (UK) |
| 50 US cups | 2.60211 Gallon (UK) |
| 100 US cups | 5.20421 Gallon (UK) |
About the Gallon (UK)
Imperial gallon = 4.546 liters. 20% larger than US gallon.
- Symbol
- gal UK
- Value in SI
- 1 Gallon (UK) = 4.54609 litre
- Typical use
- general
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other uk vs us volume units in the Western Europe family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
- Gill (UK) to US cupsHistorically reconstructed
- Teaspoon (Metric) to US cupsConventional value
- Tablespoon (Metric) to US cupsConventional value
- Cup (UK/Imperial) to US cupsConventional value
- Cup (Metric) to US cupsConventional value
- Fluid Ounce (UK) to US cupsConventional value
- Gallon (US) to US cupsConventional value
- Pint (UK) to US cupsConventional value
Related conversions
Frequently asked
How many Gallon (UK) are in a US cup?
1 US cup = 0.0520421 Gallon (UK). Multiply the number of US cups by 0.052042137 to get Gallon (UK).
What is Gallon (UK) used for?
Imperial gallon = 4.546 liters. 20% larger than US gallon. It is classified as active and dates from the modern period.
Is the Gallon (UK) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Gallon (UK) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert US cups to Gallon (UK). UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/us-cup-to-gallon-uk
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.