US Fluid Ounce to Cup Converter
Converts us fluid ounce to cup (fl oz to cup) and back. The conversion factor is shown below every result.
How to Convert US Fluid Ounce to Cup
What Is an US Fluid Ounce?
The US fluid ounce (fl oz) is a US customary unit of volume defined as exactly 1/128 of a US gallon (29.5735295625 mL).
What Is a Cup?
The US cup is a US customary volume unit equal to exactly 8 US fluid ounces (236.5882365 mL).
Common US Fluid Ounce to Cup Reference Points
Real-world reference values for quick sanity checks.
| Item | US Fluid Ounce (fl oz) | Cup (approx.) |
|---|---|---|
| A standard coffee mug | 12 fl oz | 1.5 cups |
| A can of soup | 10.75 fl oz | 1.34 cups |
| Reference values are illustrative approximations for common items, not measured specifications. | ||
US Fluid Ounce to Cup Conversion Table
| US Fluid Ounce (fl oz) | Cup (cup) |
|---|---|
| 1 fl oz | 0.125 cup |
| 2 fl oz | 0.25 cup |
| 4 fl oz | 0.5 cup |
| 6 fl oz | 0.75 cup |
| 8 fl oz | 1 cup |
| 12 fl oz | 1.5 cup |
| 16 fl oz | 2 cup |
| 32 fl oz | 4 cup |
| Source: NIST SP 811, Appendix B (1 US cup = 8 US fl oz exactly) | |
Frequently Asked Questions
How do I convert fluid ounces to cups?
Multiply the fluid ounce value by 0.125 (or divide by 8). For example, 12 fl oz × 0.125 = 1.5 cups.
Is this the same ounce used for weighing food?
No. This page converts the fluid ounce, a volume measure. The weight ounce (used for flour, meat, or produce by weight) is a different unit; see the Weight & Mass converter for that conversion.
How many cups are in a standard 16 fl oz bottle?
Exactly 2 cups, since 1 cup = 8 fl oz.
Related Cooking & Baking Converters
A good measuring tool marked in both fl oz and cup removes the guesswork at the point of use.