Convert Fluid Ounces to Cups

Enter the volume in fluid ounces below to get the value converted to cups.

Results in Cups:

1 fl oz = 0.125 c

Do you want to convert cups to fluid ounces?

How to Convert Fluid Ounces to Cups

conversion scale showing fluid ounces and equivalent cups volume values

To convert a fluid ounce measurement to a cup measurement, multiply the volume by the conversion ratio. One fluid ounce is equal to 0.125 cups, so use this simple formula to convert:

cups = fluid ounces × 0.125

The volume in cups is equal to the fluid ounces multiplied by 0.125.

For example, here's how to convert 5 fluid ounces to cups using the formula above.

5 fl oz = (5 × 0.125) = 0.625 c

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 apint 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 labelling, one fluid ounce is rounded to exactly 30 milliliters.

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 labelling, one cup is equal to 240 milliliters.

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 Measurements and Equivalent Cup Conversions

Common fluid ounce values converted to the equivalent cup value
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

More Fluid Ounce Volume Conversions

US Liquid

Convert to Gallons: 1 fl oz is equal to 0.007812 gallons
Convert to Quarts: 1 fl oz is equal to 0.03125 quarts
Convert to Pints: 1 fl oz is equal to 0.0625 pints

US Cooking

Convert to Tablespoons: 1 fl oz is equal to 2 tablespoons
Convert to Teaspoons: 1 fl oz is equal to 6 teaspoons

US Customary Volume

Convert to Cubic Inches: 1 fl oz is equal to 1.804688 cubic inches
Convert to Cubic Feet: 1 fl oz is equal to 0.001044 cubic feet
Convert to Cubic Yards: 1 fl oz is equal to 3.8681E-5 cubic yards

Metric Volume

Convert to Liters: 1 fl oz is equal to 0.029574 liters
Convert to Milliliters: 1 fl oz is equal to 29.57353 milliliters
Convert to Cubic Centimeters: 1 fl oz is equal to 29.57353 cubic centimeters
Convert to Cubic Meters: 1 fl oz is equal to 2.9574E-5 cubic meters