How many milliliters are in 1 UK fluid ounce?

1 UK fluid ounce equals 28.4131 mL.

How do I convert milliliters back to UK fluid ounces?

Use the reverse converter: 1 milliliter equals 0.0351951 UK fl oz.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert UK fluid ounces to milliliters, multiply the value by 28.4130625.

mL = UK fl oz × 28.4130625

40 UK fl oz × 28.4130625 = 1136.52 mL

Note: "cup" here means the US cup (about 236.6 mL). Metric cups (250 mL), imperial cups and US/UK fluid ounces are listed as separate units.

UK Fluid Ounce (UK fl oz): The imperial fluid ounce of exactly 28.4130625 mL, one twentieth of an imperial pint.
Milliliter (mL): Used for liquids, medicine and recipes in metric countries. One thousandth of a litre, equal to one cubic centimetre.

How do I convert UK fluid ounces to milliliters?: To convert UK fluid ounces to milliliters, multiply the value by 28.4130625.
How many milliliters are in 1 UK fluid ounce?: 1 UK fluid ounce equals 28.4131 mL.
How many milliliters are in 10 UK fluid ounces?: 10 UK fl oz equals 284.131 mL.
How do I convert milliliters back to UK fluid ounces?: Use the reverse converter: 1 milliliter equals 0.0351951 UK fl oz.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.