Fluid Ounce to Cup Formula
The complete formula for converting fluid ounces (fl oz) to cups (cup). See the formula, how it works, and worked examples below.
fl oz ÷ 8 = cup
How the Formula Works
To convert fluid ounces to cups, divide the value by 8 (or multiply by 0.125). This works because 1 fluid ounce equals 0.125 cups.
Worked Examples
1 fl oz to cup
- Start with 1 fl oz
- Divide by 8: 1 ÷ 8 = 0.125
- Result: 1 fl oz = 0.125 cup
5 fl oz to cup
- Start with 5 fl oz
- Divide by 8: 5 ÷ 8 = 0.625
- Result: 5 fl oz = 0.625 cup
10 fl oz to cup
- Start with 10 fl oz
- Divide by 8: 10 ÷ 8 = 1.25
- Result: 10 fl oz = 1.25 cup
50 fl oz to cup
- Start with 50 fl oz
- Divide by 8: 50 ÷ 8 = 6.25
- Result: 50 fl oz = 6.25 cup
100 fl oz to cup
- Start with 100 fl oz
- Divide by 8: 100 ÷ 8 = 12.5
- Result: 100 fl oz = 12.5 cup
Reverse Formula: Cup to Fluid Ounce
cup × 8 = fl oz
See the full Cup to Fluid Ounce formula for worked examples.
Related
Frequently Asked Questions
The formula is: fl oz ÷ 8 = cup. See the worked examples above for step-by-step breakdowns, or use the Fluid Ounce to Cup converter for instant results.
10 fluid ounces = 1.25 cups. Apply the formula: fl oz ÷ 8 = cup.