Convert Fluid Ounce (UK) to millilitres
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 Fluid Ounce (UK) = 28.4131 millilitres
millilitres = Fluid Ounce (UK) × 28.4131
Convert any amount
Fluid Ounce (UK) to millilitres table
| Fluid Ounce (UK) | millilitres |
|---|---|
| 0.25 Fluid Ounce (UK) | 7.10328 millilitres |
| 0.5 Fluid Ounce (UK) | 14.2066 millilitres |
| 1 Fluid Ounce (UK) | 28.4131 millilitres |
| 2 Fluid Ounce (UK) | 56.8262 millilitres |
| 3 Fluid Ounce (UK) | 85.2393 millilitres |
| 4 Fluid Ounce (UK) | 113.652 millilitres |
| 5 Fluid Ounce (UK) | 142.065 millilitres |
| 10 Fluid Ounce (UK) | 284.131 millilitres |
| 20 Fluid Ounce (UK) | 568.262 millilitres |
| 25 Fluid Ounce (UK) | 710.327 millilitres |
| 50 Fluid Ounce (UK) | 1,420.65 millilitres |
| 100 Fluid Ounce (UK) | 2,841.31 millilitres |
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 If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.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 millilitresHistorically reconstructed
- Teaspoon (Metric) to millilitresConventional value
- Tablespoon (Metric) to millilitresConventional value
- Cup (UK/Imperial) to millilitresConventional value
- Cup (Metric) to millilitresConventional value
- Gallon (UK) to millilitresConventional value
- Gallon (US) to millilitresConventional value
- Pint (UK) to millilitresConventional value
Related conversions
Frequently asked
How many millilitres are in a Fluid Ounce (UK)?
1 Fluid Ounce (UK) = 28.4131 millilitres. Multiply the number of Fluid Ounce (UK) by 28.4131 to get millilitres.
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 Fluid Ounce (UK) to millilitres. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/fl-oz-uk-to-milliliter
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