Fluid ounces to cups
1 fluid ounce = 0.125 cups
For any other value: cups = fl oz × 0.125
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0.125 cups
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You can leave the unit in: 100 fl oz is fine.
Fluid ounces to cups chart
The values people look up most.
| fluid ounces | cups |
|---|---|
| 1 fl oz | 0.125 cups |
| 2 fl oz | 0.25 cups |
| 0.5 fl oz | 0.0625 cups |
| 8 fl oz | 1 cup |
| 4 fl oz | 0.5 cups |
| 16 fl oz | 2 cups |
| 6 fl oz | 0.75 cups |
| 12 fl oz | 1.5 cups |
| 0.25 fl oz | 0.0313 cups |
| 10 fl oz | 1.25 cups |
| 14 fl oz | 1.75 cups |
| 32 fl oz | 4 cups |
| 5 fl oz | 0.625 cups |
| 64 fl oz | 8 cups |
| 48 fl oz | 6 cups |
| 3 fl oz | 0.375 cups |
| 14.5 fl oz | 1.81 cups |
| 7 fl oz | 0.875 cups |
| 24 fl oz | 3 cups |
| 40 fl oz | 5 cups |
| 5.3 fl oz | 0.662 cups |
| 16.9 fl oz | 2.11 cups |
| 18 fl oz | 2.25 cups |
| 3.5 fl oz | 0.438 cups |
| 13 fl oz | 1.63 cups |
| 2.5 fl oz | 0.313 cups |
| 25 fl oz | 3.13 cups |
| 20 fl oz | 2.5 cups |
| 15 fl oz | 1.88 cups |
| 1.5 fl oz | 0.188 cups |
Formula
cups = fl oz × 0.125
A US cup is always 8 fluid ounces, because both measure volume. Its WEIGHT in ounces is a different question and depends on what is in the cup — a cup of flour weighs about 4.4 oz and a cup of sugar about 7 oz.
Where this number comes from
This factor is exact, not rounded. Eight fluid ounces to a US cup, by definition.
Source: NIST Guide to the SI, Appendix B: Conversion Factors, NIST (National Institute of Standards and Technology, USA).
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