How to convert US fluid ounces to US cups
cup = fl oz × 0.125Multiply the value in US fluid ounces by 0.125. To go the other way, multiply by 8 (or divide by 0.125).
An US fluid ounce is smaller than an US cup: it takes 8 US fluid ounces to make one US cup.
Worked examples
- 1 US fluid ounce1 fl oz × 0.125 = 0.125 cup
- 5 US fluid ounces5 fl oz × 0.125 = 0.625 cup
- 10 US fluid ounces10 fl oz × 0.125 = 1.25 cup
- 20 US fluid ounces20 fl oz × 0.125 = 2.5 cup
- 100 US fluid ounces100 fl oz × 0.125 = 12.5 cup
US fluid ounces to US cups conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| US fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 0.1 fl oz | 0.0125 cup |
| 0.25 fl oz | 0.03125 cup |
| 0.5 fl oz | 0.0625 cup |
| 1 fl oz | 0.125 cup |
| 2 fl oz | 0.25 cup |
| 3 fl oz | 0.375 cup |
| 4 fl oz | 0.5 cup |
| 5 fl oz | 0.625 cup |
| 6 fl oz | 0.75 cup |
| 7 fl oz | 0.875 cup |
| 8 fl oz | 1 cup |
| 9 fl oz | 1.125 cup |
| 10 fl oz | 1.25 cup |
| US fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 12 fl oz | 1.5 cup |
| 15 fl oz | 1.875 cup |
| 20 fl oz | 2.5 cup |
| 25 fl oz | 3.125 cup |
| 30 fl oz | 3.75 cup |
| 40 fl oz | 5 cup |
| 50 fl oz | 6.25 cup |
| 75 fl oz | 9.375 cup |
| 100 fl oz | 12.5 cup |
| 250 fl oz | 31.25 cup |
| 500 fl oz | 62.5 cup |
| 1,000 fl oz | 125 cup |
About the units
US fluid ounce (fl oz)
One 128th of a US gallon: 29.5735295625 mL. Beverage cans and bottles in the US are labelled in fluid ounces. One US fluid ounce equals 0.00002957352956 cubic meters (m³).
US cup (cup)
The US customary cup is half a US pint, 236.5882365 mL (8 US fl oz). US nutrition labels instead use a “legal cup” of exactly 240 mL. One US cup equals 0.0002365882365 cubic meters (m³).
Frequently asked questions
How many US cups are in one US fluid ounce?
There are 0.125 US cups in one US fluid ounce, and this value is exact by definition.
How do I convert US fluid ounces to US cups?
Multiply the number of US fluid ounces by 0.125. For example, 10 fl oz × 0.125 = 1.25 cup.
How many US fluid ounces are in one US cup?
One US cup equals 8 US fluid ounces. That is the reverse factor, 1 ÷ 0.125.
What is 10 US fluid ounces in US cups?
10 fl oz = 1.25 cup.
Is this fl oz to cup converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.