To convert UK fluid oz to ml, multiply the Imperial fluid ounce value by 28.4131. The Imperial fluid ounce is 3.92% smaller than the US fluid ounce, so 1 UK fl oz = 28.4131 mL (vs 29.5735 mL for US). Use this converter for British recipes, UK pint measurements, and older Commonwealth cookbooks.
View UK fl oz to mL FormulaThe Imperial fluid ounce equals 28.4130625 mL, defined as 1/160 of an Imperial gallon. It is the traditional British unit for measuring liquid volume. The UK pint contains 20 UK fl oz = 568.261 mL, making it larger than the US pint (16 US fl oz = 473.176 mL).
The milliliter is the universal metric unit for liquid volume, used in 190+ countries. Converting UK fl oz to mL lets you follow British recipes using metric measuring tools — essential in countries that have fully adopted the metric system.
Drag the slider to compare UK fl oz and milliliters. 1 UK fl oz = 28.41 mL.
To convert UK fluid ounces to milliliters, multiply the UK fl oz value by 28.4131.
8 common UK fl oz to mL conversions. Click any card to load it in the calculator.
Click any row to load it in the converter.
| UK fl oz | Milliliters (mL) | Common Use |
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568.261 mL equals 1 UK pint (20 Imperial fl oz). This is 20% more than a US pint (473.176 mL). When a British recipe says "1 pint," use 568 mL, not 473 mL.
284.131 mL equals 1 Imperial cup (10 UK fl oz). This is 20% larger than a US cup (236.588 mL). Many British baking recipes that pre-date metrication use Imperial cups.
An Imperial gill equals 5 UK fl oz = 142.065 mL. It was traditionally used for measuring spirits in British pubs. A US gill is 4 US fl oz = 118.294 mL — different from the Imperial gill.
An Imperial gallon = 160 UK fl oz = 4,546.09 mL (4.546 L). A US gallon = 128 US fl oz = 3,785.41 mL (3.785 L). The Imperial gallon is 20% larger than the US gallon.
Most modern British recipes use metric measurements (mL and grams). However, older cookbooks (pre-1990s), pub measures (pints), and some product labels still reference Imperial fl oz. Converting UK fl oz to mL ensures accuracy with modern metric kitchen tools.