Cup to Fluid Ounce Formula
The complete formula for converting cups (cup) to fluid ounces (fl oz). See the formula, how it works, and worked examples below.
cup × 8 = fl oz
How the Formula Works
To convert cups to fluid ounces, multiply the value by 8. This works because 1 cup equals 8 fluid ounces.
Worked Examples
1 cup to fl oz
- Start with 1 cup
- Multiply by 8: 1 × 8 = 8
- Result: 1 cup = 8 fl oz
5 cup to fl oz
- Start with 5 cup
- Multiply by 8: 5 × 8 = 40
- Result: 5 cup = 40 fl oz
10 cup to fl oz
- Start with 10 cup
- Multiply by 8: 10 × 8 = 80
- Result: 10 cup = 80 fl oz
50 cup to fl oz
- Start with 50 cup
- Multiply by 8: 50 × 8 = 400
- Result: 50 cup = 400 fl oz
100 cup to fl oz
- Start with 100 cup
- Multiply by 8: 100 × 8 = 800
- Result: 100 cup = 800 fl oz
Reverse Formula: Fluid Ounce to Cup
fl oz ÷ 8 = cup
See the full Fluid Ounce to Cup formula for worked examples.
Related
Frequently Asked Questions
The formula is: cup × 8 = fl oz. See the worked examples above for step-by-step breakdowns, or use the Cup to Fluid Ounce converter for instant results.
10 cups = 80 fluid ounces. Apply the formula: cup × 8 = fl oz.