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US fluid ounces to US cups Converter
Convert US fluid ounces to US cups by typing a value: the answer appears as you type. One fl oz equals 0.125 cup, so to go from US fluid ounces to US cups you divide by 8. A table of common values is included below.
- The same number of US cups in US fluid ounces
- 80 fl oz
US fluid ounces to US cups table
| US fluid ounces (fl oz) | US cups (cup) |
|---|
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Formula
How to use it
- Type the number of US fluid ounces.
- Read the result in US cups.
- Open the table for common values, or use the reverse converter to go from US cups to US fluid ounces.
Worked examples
1 fl oz in US cups
- US cups
- 0.125 cup
15 fl oz in US cups
- US cups
- 1.875 cup
Quick reference
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. 10 fl oz = 1.25 cup. 15 fl oz = 1.875 cup. 20 fl oz = 2.5 cup.
Good to know
The cup, pint, quart and gallon here are US customary measures. An imperial gallon, used in the UK, is 4.54609 liters — about 20% larger than the US gallon of 3.785 liters — and is listed separately.
Questions people ask
How many US cups are in 1 fl oz?
1 fl oz is 0.125 cup.
How do I convert US fluid ounces to US cups?
Divide by 8. For example, 5 fl oz × 0.125 = 0.625 cup.
What is 100 fl oz in US cups?
100 fl oz is 12.5 cup.