fluid-ounces to cups | Exact Decimal + Formula
1 US Fluid Ounce = 0.125 US Cup
Fluid ounces to cups is used constantly in American cooking and bartending for measuring liquids.
About US Fluid Ounce and US Cup
US Fluid Ounce (fl oz)
A US fluid ounce is 1/8 of a US cup, about 29.57 milliliters.
Where it's used: Liquid ingredients and beverage recipes in the United States.
US Cup (cup)
A US cooking cup is 236.588 milliliters, the standard volume measure in American recipes.
Where it's used: US recipes for flour, sugar, liquids, and other ingredients.
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Formula
cup = fl oz × 0.125
To convert US Fluid Ounce to US Cup, use the formula displayed above.
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US Fluid Ounce to US Cup: Quick Reference Table
| US Fluid Ounce | US Cup (Decimal) | Fraction |
|---|---|---|
| 0.001 fl oz | 0.000125 cup | - |
| 0.01 fl oz | 0.00125 cup | - |
| 0.1 fl oz | 0.0125 cup | - |
| 0.5 fl oz | 0.0625 cup | - |
| 1 fl oz | 0.125 cup | - |
| 2 fl oz | 0.25 cup | - |
| 5 fl oz | 0.625 cup | - |
| 10 fl oz | 1.25 cup | - |
| 25 fl oz | 3.125 cup | - |
| 50 fl oz | 6.25 cup | - |
| 100 fl oz | 12.5 cup | - |
| 250 fl oz | 31.25 cup | - |
| 500 fl oz | 62.5 cup | - |
| 1000 fl oz | 125 cup | - |
fl oz to cup Formula and Examples
Direct Formula
cup = fl oz × 0.125 Inverse Formula
fl oz = cup × 8 Mental Math Shortcut
Divide the value by roughly 8 to quickly estimate the converted result.
Common US Fluid Ounce to US Cup Calculations
- 5 fl oz = 0.625 cup
- 10 fl oz = 1.25 cup
- 50 fl oz = 6.25 cup
- 100 fl oz = 12.5 cup
- 500 fl oz = 62.5 cup
Precision & Practical Use
For example, 10 fl oz = 1.25 cup — roughly standard single unit scale.
Results are computed to up to 9 decimal places. Round to the precision of your measuring instrument — for most cooking (volume) applications, 2–3 significant figures are plenty.
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How to Convert US Fluid Ounce to US Cup
How many us cups are in one us fluid ounce?
One US Fluid Ounce (fl oz) equals 0.125 US Cup (cup). To convert us fluid ounces to us cups, multiply the us fluid ounce value by 0.125.
How do I convert US Fluid Ounce to US Cup?
Multiply your us fluid ounce value by 0.125 to get the result in US Cup: cup = fl oz × 0.125. For example, 5 fl oz = 0.625 cup.
What is the formula for converting fl oz to cup?
The conversion formula is cup = fl oz × 0.125. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.
Is there a quick mental estimate for fl oz to cup?
Divide the value by roughly 8 to quickly estimate the converted result.
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