cups to ounces
In U.S. recipes, 1 cup = 8 fluid ounces. To convert cups to ounces, use the formula: fl oz = cups × 8. Below: instant answers, charts, examples, and pro tips. You can also return to the instant calculator.
Open the CalculatorQuick Answer: fl oz = cups × 8. For example, 2 cups × 8 = 16 fl oz.
Updated 2025 · U.S. cup measure.
Common cup → fl oz conversions
Cups to ounces
| Cups | Fluid Ounces |
|---|---|
| 1/4 cup | 2 fl oz |
| 1/3 cup | 2.67 fl oz |
| 1/2 cup | 4 fl oz |
| 2/3 cup | 5.33 fl oz |
| 3/4 cup | 6 fl oz |
| 1 cup | 8 fl oz |
| 2 cups (1 pint) | 16 fl oz |
| 4 cups (1 quart) | 32 fl oz |
Takeaway: Multiply cups × 8 to get fluid ounces.
Shortcut facts
- 1/2 cup = 4 fl oz
- 1 1/2 cups = 12 fl oz
- 1 pint (2 cups) = 16 fl oz
- 1 quart (4 cups) = 32 fl oz
Example: Pancake batter
Recipe calls for 1.5 cups milk. Conversion: 1.5 × 8 = 12 fl oz. Pour 12 ounces of milk into the bowl—done.
Summary: 1.5 cups = 12 fl oz.
Common mistakes
Mixing weight and volume
“8 oz” flour by weight is not the same as 1 cup (volume). Always check fl oz vs oz.
Using metric cups
U.S. cup = 240 mL; Metric cup = 250 mL; UK cup = 284 mL. Differences matter.
Rounding early
Keep decimals until the final step to avoid small errors stacking up.
10-second method: cups to fl oz
- Confirm U.S. cups.
- Multiply cups × 8.
- Anchor facts: 1/2 cup = 4 fl oz; 1 cup = 8 fl oz; 2 cups = 16 fl oz.
Summary: Cups × 8 = fl oz.
More conversions
FAQ: cups to ounces
How many ounces in 1 cup?
1 U.S. cup = 8 fluid ounces.
How many ounces in 2 cups?
2 cups = 16 fluid ounces (1 pint).
Is 1 cup always 8 oz?
Yes, in U.S. volume (fl oz). But for weight (oz), the number depends on the ingredient.