Fluid ounces (fl oz) to US cups (cup) Conversion
Fluid ounces
The fluid ounce is a unit of volume used for measuring liquids in the US customary and imperial systems. The US fluid ounce is approximately 29.5735 mL while the imperial fluid ounce is 28.4131 mL. It should not be confused with the avoirdupois ounce (a unit of mass). In the United States, oral liquid medications and beverage serving sizes on nutrition labels are expressed in fluid ounces.
US cups
The cup is a unit of volume used primarily in cooking and baking, equal to exactly 236.5882365 mL in the US customary system. The metric cup (250 mL) is used in Australia, Canada, and South Africa. In culinary education, cup measurements form the practical basis of recipe standardisation, though the variation between US, metric, and UK cups is a common source of international recipe confusion.
| Fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 0.1 fl oz | 0.0125 cup |
| 1 fl oz | 0.125 cup |
| 2 fl oz | 0.25 cup |
| 3 fl oz | 0.375 cup |
| 5 fl oz | 0.625 cup |
| 10 fl oz | 1.25 cup |
| 20 fl oz | 2.50 cup |
| 30 fl oz | 3.75 cup |
| 50 fl oz | 6.25 cup |
| 100 fl oz | 12.50 cup |
| 1000 fl oz | 125.00 cup |
Frequently Asked Questions (FAQ)
How many US cups are in 1 fluid ounces?
1 fluid ounces (fl oz) is exactly 0.125 US cups (cup).
How do I convert fluid ounces to US cups?
Multiply the value in fluid ounces by 0.125 to get the result in US cups. Or use the converter above — type any number and see the result instantly.