Convert US cups to Fluid Ounce (UK)
Western Europe · Cooking Measures · 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 = 8.32673 Fluid Ounce (UK)
Fluid Ounce (UK) = US cups × 8.3267309
Convert any amount
US cups to Fluid Ounce (UK) table
| US cups | Fluid Ounce (UK) |
|---|---|
| 0.25 US cups | 2.08168 Fluid Ounce (UK) |
| 0.5 US cups | 4.16337 Fluid Ounce (UK) |
| 1 US cup | 8.32673 Fluid Ounce (UK) |
| 2 US cups | 16.6535 Fluid Ounce (UK) |
| 3 US cups | 24.9802 Fluid Ounce (UK) |
| 4 US cups | 33.3069 Fluid Ounce (UK) |
| 5 US cups | 41.6337 Fluid Ounce (UK) |
| 10 US cups | 83.2673 Fluid Ounce (UK) |
| 20 US cups | 166.535 Fluid Ounce (UK) |
| 25 US cups | 208.168 Fluid Ounce (UK) |
| 50 US cups | 416.337 Fluid Ounce (UK) |
| 100 US cups | 832.673 Fluid Ounce (UK) |
About the Fluid Ounce (UK)
UK fl oz = 28.41ml. Slightly smaller than US.
- Symbol
- fl oz UK
- Value in SI
- 1 Fluid Ounce (UK) = 0.0284131 litre
- Typical use
- cooking
- 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 cooking measures 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 If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.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
- Gallon (UK) to US cupsConventional value
- Gallon (US) to US cupsConventional value
- Pint (UK) to US cupsConventional value
Related conversions
Frequently asked
How many Fluid Ounce (UK) are in a US cup?
1 US cup = 8.32673 Fluid Ounce (UK). Multiply the number of US cups by 8.3267309 to get Fluid Ounce (UK).
What is Fluid Ounce (UK) used for?
UK fl oz = 28.41ml. Slightly smaller than US. It is classified as active and dates from the modern period.
Is the Fluid Ounce (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 Fluid Ounce (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 Fluid Ounce (UK). UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/us-cup-to-fl-oz-uk
Report an incorrect value or source
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