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Cups to Fluid Ounces

Convert cups (cup) to fluid ounces (fl oz) — instant and accurate

1 cup = 8 fl oz  ·  To convert cups to fluid ounces, multiply by 8.

8 fl oz

Cups to Fluid Ounces Conversion Table

CupsFluid Ounces
0.25 cup2 fl oz
0.5 cup4 fl oz
1 cup8 fl oz
2 cup16 fl oz
3 cup24 fl oz
4 cup32 fl oz
5 cup40 fl oz
6 cup48 fl oz
8 cup64 fl oz
10 cup80 fl oz
16 cup128 fl oz
25 cup200 fl oz
50 cup400 fl oz
100 cup800 fl oz
250 cup2000 fl oz
500 cup4000 fl oz
1000 cup8000 fl oz

Formula

fluid ounces = cups × 8
cups = fluid ounces × 0.125
Example: 5 cup × 8 = 40 fl oz

About the Cups-to-Fluid Ounces Conversion

Converting cups to fluid ounces is a basic conversion within the US customary system, common in recipes and beverage measurement. One US cup contains exactly 8 fluid ounces by definition.

Real-World Examples

  • 1 cup (one cup) = 8 fl oz
  • 0.5 cup (half-cup) = 4 fl oz
  • 2 cup (one pint) = 16 fl oz
  • 4 cup (one quart) = 32 fl oz

Fluid Ounces to Cups (Reverse)

Fluid OuncesCups
0.25 fl oz0.03125 cup
0.5 fl oz0.0625 cup
1 fl oz0.125 cup
2 fl oz0.25 cup
3 fl oz0.375 cup
4 fl oz0.5 cup
5 fl oz0.625 cup
6 fl oz0.75 cup
8 fl oz1 cup
10 fl oz1.25 cup
16 fl oz2 cup
25 fl oz3.125 cup
50 fl oz6.25 cup
100 fl oz12.5 cup
250 fl oz31.25 cup
500 fl oz62.5 cup
1000 fl oz125 cup

Frequently Asked Questions

How many fluid ounces are in a cup?

1 cup equals 8 fluid ounces.

How do I convert cups to fluid ounces?

Multiply the value in cups by 8 to get fluid ounces. For example, 5 cup × 8 = 40 fl oz.

How do I convert fluid ounces back to cups?

Multiply the value in fluid ounces by 0.125 to get cups. Equivalently, divide by 8.

How many cups are in a fluid ounce?

1 fluid ounce equals 0.125 cups.

How many fluid ounces is 1 cup?

1 cup (one cup) equals 8 fl oz.

Is the cups-to-fluid ounces conversion exact?

Yes. 1 cup = 8 fl oz is an exact value defined by international agreement.

About Cups and Fluid Ounces

The US cup equals 8 fluid ounces, 16 tablespoons, or exactly 236.5882 milliliters. It is the workhorse unit of American home cooking.

The US fluid ounce (symbol fl oz) equals 2 tablespoons, or exactly 29.5735 milliliters. It is distinct from the UK fluid ounce, which is slightly larger.

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