How to use Cups to Fluid Ounces
Type a value in cups and the fluid ounces figure appears straight away. The conversion table further down lists common values.
The formula
fl oz = cups × 8
Examples
- 1 cups to fluid ounces
8 US fl oz
- 10 cups to fluid ounces
80 US fl oz
- 250 cups to fluid ounces
2,000 US fl oz
Cups to Fluid Ounces conversion table
| Cups | Fluid Ounces |
|---|---|
| 1 | 8 US fl oz |
| 2 | 16 US fl oz |
| 3 | 24 US fl oz |
| 4 | 32 US fl oz |
| 5 | 40 US fl oz |
| 6 | 48 US fl oz |
| 7 | 56 US fl oz |
| 8 | 64 US fl oz |
| 9 | 72 US fl oz |
| 10 | 80 US fl oz |
| 15 | 120 US fl oz |
| 20 | 160 US fl oz |
| 25 | 200 US fl oz |
| 30 | 240 US fl oz |
| 40 | 320 US fl oz |
| 50 | 400 US fl oz |
| 75 | 600 US fl oz |
| 100 | 800 US fl oz |
| 250 | 2,000 US fl oz |
| 500 | 4,000 US fl oz |
| 1,000 | 8,000 US fl oz |
Limitations and assumptions
Uses the stated standard definitions. US customary cups (1 cup = 8 US fluid ounces).
Frequently asked questions
How many fluid ounces are in one cup?
One cup equals 8 US fl oz. The formula is fl oz = cups × 8.
How do I convert cups to fluid ounces?
Use fl oz = cups × 8. For example, 10 cups gives 80 US fl oz. Enter your own value above and the converter does the arithmetic for you.
How do I convert fluid ounces back to cups?
Invert the relationship: reverse the formula so you divide where this one multiplies (and subtract where it adds).
Is this conversion exact?
Volume units differ by country: a US gallon is about 3.785 L while an imperial (UK) gallon is about 4.546 L, so check which system your recipe, label or fuel receipt uses.