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US Cups to US Fluid Ounces Converter

Convert US cups (cup) to US fluid ounces (fl oz), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a volume, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
8 fl oz
US gallons
0.0625 gal
US liquid quarts
0.25 qt
US liquid pints
0.5 pt
US tablespoons
16 tbsp
US teaspoons
48 tsp
cubic miles
5.6760536466 × 10⁻¹⁴ mi³
cubic yards
0.000309445730453 cu yd
cubic feet
0.00835503472222 cu ft
cubic inches
14.4375 in³
cubic kilometers
2.365882365 × 10⁻¹³ km³
cubic meters
0.0002365882365 m³
liters
0.2365882365 L
milliliters
236.5882365 mL
cubic centimeters
236.5882365 cm³
cubic millimeters
236,588.2365 mm³
imperial gallons
0.0520421365393 imp gal
imperial quarts
0.208168546157 imp qt
imperial pints
0.416337092314 imp pt
imperial fluid ounces
8.32674184629 imp fl oz
imperial tablespoons
13.3227869541 imp tbsp
imperial teaspoons
39.9683608622 imp tsp
drops
4,731.76473 gtt

1 cup = 8 fl oz

Show the working
  1. 1 cup = 8 fl oz
  2. 1 × 8 = 8 fl oz

How to convert us cups to us fluid ounces

1 cup = 8 fl oz, so multiply by 8 to go from US cups to US fluid ounces. Going the other way, 1 fl oz = 0.125 cup.

fl oz = cup × 8
cup = fl oz × 0.125

Worked example:

1 cup = 8 fl oz
5 × 8 = 40 fl oz

US Cups to us fluid ounces table

US CupsUS Fluid Ounces
1/4 cup2 fl oz
1/3 cup2.66666666667 fl oz
1/2 cup4 fl oz
2/3 cup5.33333333333 fl oz
3/4 cup6 fl oz
1 cup8 fl oz
1 1/2 cup12 fl oz
2 cup16 fl oz
2 1/2 cup20 fl oz
3 cup24 fl oz
4 cup32 fl oz
5 cup40 fl oz
6 cup48 fl oz
7 cup56 fl oz
8 cup64 fl oz
9 cup72 fl oz
10 cup80 fl oz
12 cup96 fl oz
15 cup120 fl oz
20 cup160 fl oz
25 cup200 fl oz
30 cup240 fl oz
40 cup320 fl oz
50 cup400 fl oz
75 cup600 fl oz
100 cup800 fl oz
250 cup2,000 fl oz
500 cup4,000 fl oz
1000 cup8,000 fl oz

About the units

US Cups (cup)
US cups, a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).
US Fluid Ounces (fl oz)
US fluid ounces, a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).

Formula version 0.1.0Reviewed