fluid ounce → US cup | Converter
Convert fluid ounce to US cup with the formula below. 1 fl oz ≈ 0.125 cup
Quick Insight
1 fluid ounce = 0.125 US cup
8 fl oz ≈ 1 cup. Follow the definition stated by the recipe or label; do not silently replace it with another cup convention.
Rounded factors
Relative rounding difference; not measurement uncertainty.
Visual Comparisons
Mathematical Facts
Convert fluid ounce to US cup with the formula below. cup ≈ fl oz × 0.125. 1 fl oz ≈ 0.0295735295625 L; 1 cup ≈ 0.2365882365 L Cup means the US customary cup (236.5882365 mL), not a 250 mL metric cup, a 240 mL labeling cup or a household glass. US customary liquid measures are used. US fluid ounces describe volume on liquid-container labels and in recipe measurements. US customary cups let a recipe quantity be expressed as repeatable measuring-cup volumes.
Why This Conversion Matters
Translate a liquid ingredient quantity into the measuring units available for the recipe. The worked amounts show the same volume before and after conversion. The calculator uses the full stored factor and rounds displayed results to 12 significant digits. Display precision is not a guarantee of measurement accuracy.
Real-World Examples
Liquid recipe scaling
Compare two illustrative liquid amounts labeled 8 US fl oz and 12 US fl oz. Translate a liquid ingredient quantity into the measuring units available for the recipe. The worked amounts show the same volume before and after conversion.
Examples:
- 8 fl oz ≈ 1 cup
- 12 fl oz ≈ 1.5 cup
Pro Tips:
- ✓Scale the whole recipe quantity first, convert once, then choose a suitable marked measuring vessel.
Quick Reference Table
| fluid ounces | US cups |
|---|---|
| 10 fl oz | 1.25 cup |
| 50 fl oz | 6.25 cup |
| 100 fl oz | 12.5 cup |
| 500 fl oz | 62.5 cup |
| 1,000 fl oz | 125 cup |
Formula: cup = fl oz × conversion factor
Common Mistakes to Avoid
Treating 240 mL or 250 mL as this calculator’s US cup
The US customary cup here is 236.5882365 mL. A 240 mL labeling cup and a 250 mL metric cup represent different volumes.
✓ Follow the definition stated by the recipe or label; do not silently replace it with another cup convention. 1 fl oz ≈ 0.125 cup.
Pro Tips
- ✓Keep fl oz with the value; oz alone can mean mass, which needs density to relate it to volume.
- ✓Check the cup definition: 236.5882365 mL here, rather than a 250 mL metric cup or a household glass.
- ✓Scale the whole recipe quantity first, convert once, then choose a suitable marked measuring vessel.
Frequently Asked Questions
How do I calculate the conversion?
cup ≈ fl oz × 0.125. 1 fl oz ≈ 0.0295735295625 L; 1 cup ≈ 0.2365882365 L Cup means the US customary cup (236.5882365 mL), not a 250 mL metric cup, a 240 mL labeling cup or a household glass. US customary liquid measures are used.
What is an example?
1 fl oz ≈ 0.125 cup; 10 fl oz ≈ 1.25 cup; 100 fl oz ≈ 12.5 cup
fluid ounce → US cup: What do the worked quantities look like?
8 fl oz ≈ 1 cup; 12 fl oz ≈ 1.5 cup. Scale the whole recipe quantity first, convert once, then choose a suitable marked measuring vessel.
Which definition or measurement error should I check?
The US customary cup here is 236.5882365 mL. A 240 mL labeling cup and a 250 mL metric cup represent different volumes. Follow the definition stated by the recipe or label; do not silently replace it with another cup convention.
Popular Converters
Most Used
1 liter ≈ 0.264172052358 gallon
1 gallon ≈ 3.785411784 liter
1 milliliter ≈ 0.0338140227018 fluid ounce
1 fluid ounce ≈ 29.5735295625 milliliter
1 milliliter ≈ 0.00422675283773 US cup
1 US cup ≈ 236.5882365 milliliter
Browse 6 Volume converters and compare the formulas and unit definitions.