ToolNestFluid Ounces to Cups Converter
Convert fluid ounces to cups instantly with our free volume converter. 1 fluid ounce = 0.125 cup — type any value below and the result updates live.
Fluid Ounces → Cups⇄ Swap: Cups → Fluid Ounces
—
✓ Free forever · ✓ No signup · ✓ Runs in your browser.
Fluid Ounces to Cups Formula
Cups = Fluid Ounces × 0.125 (Fluid Ounces = Cups × 8)
Volume conversion for cooking, fuel, and engineering — metric liters and milliliters alongside US customary gallons, quarts, pints, cups, and fluid ounces.
Fluid Ounces to Cups Conversion Table
| Fluid Ounces | Cups | |
|---|---|---|
| 1 fl oz | = | 0.125 cup |
| 2 fl oz | = | 0.25 cup |
| 5 fl oz | = | 0.625 cup |
| 10 fl oz | = | 1.25 cup |
| 25 fl oz | = | 3.125 cup |
| 50 fl oz | = | 6.25 cup |
| 100 fl oz | = | 12.5 cup |
About Fluid Ounces and Cups
A US fluid ounce is 1/128 of a US gallon (29.5735 ml). The unit for drink servings, bottles, and small liquid measures.
A US customary cup is 8 fluid ounces (236.588 ml) — the backbone of American recipes and baking measurements.
Frequently Asked Questions
How many cups are in one fluid ounce?
One fluid ounce equals 0.125 cups. Multiply any fluid ounces value by 0.125 to convert it.
What is the formula for converting fluid ounces to cups?
Cups = Fluid Ounces × 0.125. To reverse it: fluid ounces = cups × 8.
How do I convert cups back to fluid ounces?
Divide the cups value by 0.125 (equivalently, multiply by 8). Or use our cups-to-fluid ounces converter going the other way.
Which is bigger, a fluid ounce or a cup?
A cup is bigger — it takes 8 fluid ounces to make one cup.