Convert Cups to Ounces

Enter the butter in cups below to get the value converted to ounces.

Results in Ounces:
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1 c = 8 oz
Do you want to convert ounces to cups?

How to Convert Cups to Ounces

To convert a cup measurement to a ounce measurement, multiply the butter by the conversion ratio. One cup is equal to 8 ounces, so use this simple formula to convert:

ounces = cups × 8

The butter in ounces is equal to the cups multiplied by 8.

For example, here's how to convert 5 cups to ounces using the formula above.
5 c = (5 × 8) = 40 oz

Cups and ounces are both units used to measure butter. Keep reading to learn more about each unit of measure.


One cup of butter is equal to 2 sticks, or 1/2 pound.

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.


In the US butter is sold in 16 ounce packages, which contain 1 pound of butter.

The ounce is a US customary and imperial unit of butter. Ounces can be abbreviated as oz, for example 1 ounce can be written as 1 oz.

Cup Measurements and Equivalent Ounce Conversions

Common cup values converted to the equivalent ounce value
Cups Ounces
1 c 8 oz
2 c 16 oz
3 c 24 oz
4 c 32 oz
5 c 40 oz
6 c 48 oz
7 c 56 oz
8 c 64 oz
9 c 72 oz
10 c 80 oz
11 c 88 oz
12 c 96 oz
13 c 104 oz
14 c 112 oz
15 c 120 oz
16 c 128 oz
17 c 136 oz
18 c 144 oz
19 c 152 oz
20 c 160 oz
21 c 168 oz
22 c 176 oz
23 c 184 oz
24 c 192 oz
25 c 200 oz
26 c 208 oz
27 c 216 oz
28 c 224 oz
29 c 232 oz
30 c 240 oz
31 c 248 oz
32 c 256 oz
33 c 264 oz
34 c 272 oz
35 c 280 oz
36 c 288 oz
37 c 296 oz
38 c 304 oz
39 c 312 oz
40 c 320 oz

More Cup Butter Conversions

Butter Volume
Convert to Sticks Of Butter
1 c is equal to 2 sticks of butter
Convert to Tablespoons
1 c is equal to 16 tablespoons
Convert to Teaspoons
1 c is equal to 48 teaspoons
Convert to Milliliters
1 c is equal to 236.58824 milliliters
Butter Weight
Convert to Pounds
1 c is equal to 0.5 pounds
Convert to Grams
1 c is equal to 226.7968 grams

Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

Convert units of length, weight, volume, and area between imperial and metric measures

Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

Here is a list of some of the common metric prefixes:

  • “kilo” – 1,000x larger
  • “hecto” – 100x larger
  • “deca” – 10x larger
  • “deci” – 10x smaller
  • “centi” – 100x smaller
  • “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”
The u in Until refers to the base unit.