VOLUME CONVERSION
US fluid ounce to Imperial fluid ounce.
Convert us fluid ounce (fl oz (US)) to imperial fluid ounce (fl oz (UK)), with the math explained.
1 fl oz (US) = 1.040842731 fl oz (UK)
US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
THE MATH, MADE SIMPLE
How to convert us fluid ounce to imperial fluid ounce
Multiply your us fluid ounce value by 1.04084273079 to get the equivalent in imperial fluid ounce. Both units are normalized through the liter.
fl oz (UK) = fl oz (US) × 1.04084273110 fl oz (US) = 10.4084273079 fl oz (UK)
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
QUICK REFERENCE
fl oz (US) to fl oz (UK) conversion table
| US fluid ounce (fl oz (US)) | Imperial fluid ounce (fl oz (UK)) |
|---|---|
| 1 fl oz (US) | 1.04084273079 fl oz (UK) |
| 2 fl oz (US) | 2.08168546157 fl oz (UK) |
| 5 fl oz (US) | 5.20421365393 fl oz (UK) |
| 10 fl oz (US) | 10.4084273079 fl oz (UK) |
| 20 fl oz (US) | 20.8168546157 fl oz (UK) |
| 50 fl oz (US) | 52.0421365393 fl oz (UK) |
| 100 fl oz (US) | 104.084273079 fl oz (UK) |
| 500 fl oz (US) | 520.421365393 fl oz (UK) |
| 1,000 fl oz (US) | 1,040.84273079 fl oz (UK) |
About the us fluid ounce
The us fluid ounce (fl oz (US)) is a unit of volume. One us fluid ounce equals 0.0295735295625 liter (base unit) in this calculator.
All us fluid ounce conversionsAbout the imperial fluid ounce
The imperial fluid ounce (fl oz (UK)) is a unit of volume. One imperial fluid ounce equals 0.0284130625 liter (base unit) in this calculator.
All imperial fluid ounce conversionsCommon questions
What is 1 fl oz (US) in fl oz (UK)?
One us fluid ounce equals 1.04084273079 fl oz (UK). Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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