1 US fluid ounce (fl oz (US)) = 0.125 US cups (cup). To convert, divide by 8: cup = fl oz (US) ÷ 8. For example, 5 fl oz (US) = 0.625 cup.
cup = fl oz (US) ÷ 8
US fluid ounces to US cups table
| US fluid ounces (fl oz (US)) | US cups (cup) |
|---|---|
| 1 | 0.125 |
| 2 | 0.25 |
| 3 | 0.375 |
| 4 | 0.5 |
| 5 | 0.625 |
| 10 | 1.25 |
| 20 | 2.5 |
| 25 | 3.125 |
| 50 | 6.25 |
| 100 | 12.5 |
| 250 | 31.25 |
| 500 | 62.5 |
| 1,000 | 125 |
The two units
US fluid ounce (fl oz (US)). One 128th of a US gallon.
US cup (cup). The US customary cup: half a US pint, 8 US fluid ounces. Nutrition labels use a rounded 240 mL cup.
Because both units are defined in terms of the same base unit, the factor 0.125 is exact, not a rounded measurement.
Convert US fluid ounces to other units
- US fluid ounces to liters — 1 fl oz (US) = 0.0295735296 L
- US fluid ounces to milliliters — 1 fl oz (US) = 29.57352956 mL
- US fluid ounces to cubic meters — 1 fl oz (US) = 0.0000295735 m³
- US fluid ounces to US gallons — 1 fl oz (US) = 0.0078125 gal (US)
- US fluid ounces to US quarts — 1 fl oz (US) = 0.03125 qt (US)
- US fluid ounces to US pints — 1 fl oz (US) = 0.0625 pt (US)
- US fluid ounces to US tablespoons — 1 fl oz (US) = 2 tbsp
- US fluid ounces to US teaspoons — 1 fl oz (US) = 6 tsp
- US fluid ounces to imperial gallons — 1 fl oz (US) = 0.0065052671 gal (UK)
- US fluid ounces to imperial pints — 1 fl oz (US) = 0.0520421365 pt (UK)
- US fluid ounces to cubic feet — 1 fl oz (US) = 0.0010443793 ft³
- US fluid ounces to cubic inches — 1 fl oz (US) = 1.8046875 in³
Convert other units to US cups
Questions people ask
- How many US cups are in a US fluid ounce?
- 0.125, exactly.
- How do you convert US fluid ounces to US cups?
- cup = fl oz (US) ÷ 8. It is the same as dividing by 8.
- How do you convert US cups back to US fluid ounces?
- fl oz (US) = cup × 8. See US cups to US fluid ounces.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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