How to convert US fluid ounces to US cups
One US fluid ounce equals 0.125 US cups. To convert, multiply the number of US fluid ounces by 0.125 (or divide by 8):
Mental-math shortcut: Divide fluid ounces by 8: 16 fl oz = 2 cups.
Example
Convert 16 US fluid ounces to US cups: 16 fl oz × 0.125 = 2 cup.
Fluid Ounces to Cups conversion chart
| Fluid Ounces (fl oz) | Cups (cup) |
|---|---|
| 1 | 0.125 |
| 2 | 0.25 |
| 4 | 0.5 |
| 6 | 0.75 |
| 8 | 1 |
| 10 | 1.25 |
| 12 | 1.5 |
| 16 | 2 |
| 20 | 2.5 |
| 24 | 3 |
| 32 | 4 |
| 48 | 6 |
| 64 | 8 |
What is a US fluid ounce?
The US fluid ounce (fl oz) is 1/128 of a US gallon, about 29.57 milliliters. It is used for drinks, liquid ingredients and bottle sizes in the United States. The UK imperial fluid ounce is slightly smaller, about 28.41 mL.
What is a US cup?
The US customary cup is 8 US fluid ounces, about 236.6 milliliters. US nutrition labels use a "legal cup" of exactly 240 mL, and Australia, Canada and many other countries use a metric cup of 250 mL. This converter uses the US customary cup.
Converting the other way? Use the Cups to Fluid Ounces converter.
Frequently asked questions
How many US cups is one US fluid ounce?
One US fluid ounce is 0.125 US cups.
How do I convert US fluid ounces to US cups?
Multiply the value in US fluid ounces by 0.125. For example, 16 fl oz × 0.125 = 2 cup.
What is 12 fl oz in US cups?
12 fl oz is 1.5 US cups.
How do I convert US cups to US fluid ounces?
Multiply US cups by 8 (or divide by 0.125). You can also use our Cups to Fluid Ounces converter.
How many cups is 8 oz?
8 US fluid ounces is exactly 1 cup. For dry ingredients measured by weight, 8 ounces is not always 1 cup — it depends on the ingredient.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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