Imperial fluid ounces to US fluid ounces
Type a value in imperial fluid ounces to see it in US fluid ounces straight away, or type in the second box to convert back.
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How to use it
- Type the value in the imperial fluid ounces box.
- Read the result in US fluid ounces as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
fl oz (US) = fl oz (imp) × 0.9607599404
Multiply the value in imperial fluid ounces by 0.9607599404 to get US fluid ounces.
Example
To convert 25 fl oz (imp) to US fluid ounces: 25 × 0.9607599404 = 24.019 fl oz (US).
Conversion table
| Imperial fluid ounces (fl oz (imp)) | US fluid ounces (fl oz (US)) |
|---|---|
| 1 | 0.96076 |
| 2 | 1.92152 |
| 3 | 2.88228 |
| 5 | 4.8038 |
| 10 | 9.6076 |
| 20 | 19.2152 |
| 25 | 24.019 |
| 50 | 48.038 |
| 100 | 96.076 |
| 250 | 240.19 |
| 500 | 480.38 |
| 1,000 | 960.76 |
About the units
- Imperial fluid ounce
- The imperial fluid ounce is 1/160 of an imperial gallon, exactly 28.4130625 milliliters.
- US fluid ounce
- The US fluid ounce is 1/128 of a US gallon, exactly 29.5735295625 milliliters.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many US fluid ounces are in one imperial fluid ounce?
1 fl oz (imp) = 0.96076 fl oz (US) exactly.
How do I convert imperial fluid ounces to US fluid ounces?
Use fl oz (US) = fl oz (imp) × 0.9607599404. For example, 25 fl oz (imp) = 24.019 fl oz (US).
How many imperial fluid ounces are in one US fluid ounce?
1 fl oz (US) = 1.04084 fl oz (imp).
What is the difference between a US gallon and an imperial gallon?
A US gallon is 3.785411784 liters and the imperial gallon used in the UK is 4.54609 liters, about 20% larger. Check where a figure comes from before converting, since US sources mean the US gallon.
How many milliliters are in a cup?
The US customary cup used in recipes is 236.5882365 mL and the metric cup is 250 mL. US nutrition labels round the cup to 240 mL, so the figure differs slightly between sources.