To convert us fluid ounces to cups, multiply by 0.125.
The calculation uses 1 fl oz = 0.125 cup. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
value in cup = value in fl oz × 0.125
fl oz- Input unit: us fluid ounces
cup- Output unit: cups
How to use this calculator
- Enter a value in fl oz.
- Multiply by the stored conversion factor.
- Read the result in cup; divide by the same factor to convert back.
Worked examples
Worked conversion
1 fl oz × 0.125 ≈ 0.125 cup.
Reverse conversion
0.125 cup ÷ 0.125 ≈ 1 fl oz. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 0.125 cup per fl oz.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
fl oz to cup table
| fl oz | cup (rounded) |
|---|---|
| 0 | 0 |
| 1 | 0.125 |
| 2 | 0.25 |
| 5 | 0.625 |
| 10 | 1.25 |
| 100 | 12.5 |
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