Fluid Ounces to Cups Conversion
Enter the volume in fluid ounces below to get the value converted to cups.
1 fl oz = 1/8 c
How to Convert Fluid Ounces to Cups
To convert a fluid ounce measurement to a cup measurement, divide the volume by the conversion ratio.
Since one cup is equal to 8 fluid ounces, you can use this simple formula to convert:
The volume in cups is equal to the fluid ounces divided by 8.
Fluid ounces and cups are both units used to measure volume. Keep reading to learn more about each unit of measure.
Fluid Ounces
The US fluid ounce is a unit of volume equal to 1/16 of a pint or 1/8 of a cup. The fluid ounce is sometimes referred to as an "ounce" but should not be confused with the unit of mass. One fluid ounce is equal to just under 29.6 milliliters, but in nutrition labeling, one fluid ounce is rounded to exactly 30 milliliters.[1]
The fluid ounce is a US customary unit of volume. Fluid ounces can be abbreviated as fl oz, and are also sometimes abbreviated as fl. oz. or oz. fl.. For example, 1 fluid ounce can be written as 1 fl oz, 1 fl. oz., or 1 oz. fl..
Cups
The cup is a unit of volume equal to 16 tablespoons or 8 fluid ounces. The cup should not be confused with the metric cup or the teacup, which are different units of volume. One cup is equal to just under 236.6 milliliters, but in nutrition labeling, one cup is equal to 240 milliliters.[2]
The cup is a US customary unit of volume. Cups can be abbreviated as c, and are also sometimes abbreviated as C. For example, 1 cup can be written as 1 c or 1 C.
Fluid Ounce to Cup Conversion Table
| Fluid Ounces | Cups |
|---|---|
| 1 fl oz | 0.125 c |
| 2 fl oz | 0.25 c |
| 3 fl oz | 0.375 c |
| 4 fl oz | 0.5 c |
| 5 fl oz | 0.625 c |
| 6 fl oz | 0.75 c |
| 7 fl oz | 0.875 c |
| 8 fl oz | 1 c |
| 9 fl oz | 1.125 c |
| 10 fl oz | 1.25 c |
| 11 fl oz | 1.375 c |
| 12 fl oz | 1.5 c |
| 13 fl oz | 1.625 c |
| 14 fl oz | 1.75 c |
| 15 fl oz | 1.875 c |
| 16 fl oz | 2 c |
| 17 fl oz | 2.125 c |
| 18 fl oz | 2.25 c |
| 19 fl oz | 2.375 c |
| 20 fl oz | 2.5 c |
| 21 fl oz | 2.625 c |
| 22 fl oz | 2.75 c |
| 23 fl oz | 2.875 c |
| 24 fl oz | 3 c |
| 25 fl oz | 3.125 c |
| 26 fl oz | 3.25 c |
| 27 fl oz | 3.375 c |
| 28 fl oz | 3.5 c |
| 29 fl oz | 3.625 c |
| 30 fl oz | 3.75 c |
| 31 fl oz | 3.875 c |
| 32 fl oz | 4 c |
| 33 fl oz | 4.125 c |
| 34 fl oz | 4.25 c |
| 35 fl oz | 4.375 c |
| 36 fl oz | 4.5 c |
| 37 fl oz | 4.625 c |
| 38 fl oz | 4.75 c |
| 39 fl oz | 4.875 c |
| 40 fl oz | 5 c |
References
- U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures
- U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures
