Butter Cups to Ounces
Convert any amount of butter between cups and ounces. 1 cup of butter equals 8.01 oz. Use the calculator for custom amounts, or choose an amount below.
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Popular Recipe Amounts
Common butter measurements found in recipes.
Other Units for Butter
Convert butter from cups to other units. Each link has its own calculator and conversion amounts.
Similar Ingredients
Measuring Tip
Softened butter and melted butter measure differently by volume. Melted butter settles into the cup with no air pockets, giving a slightly higher weight per cup.
Understanding the Units
What is a Cup?
The US cup (236.588 ml) is slightly smaller than the metric cup used in Australia and some other countries (250 ml). When following recipes from different countries, check which cup standard is being used.
What is an Ounce?
Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.
Frequently Asked Questions
For butter, 1 cup equals 8.01 oz. For other amounts, select an amount below or use the calculator for a custom quantity.
The most accurate way is to weigh butter on a kitchen scale. If you are measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly from the container, which packs more in and gives a heavier result.
Mostly. The cups to ounces conversion for butter may vary slightly (typically within 3-5%) based on fat content and brand formulation.
Weighing is more consistent than volume measuring. A cup of butter can vary by 10-20% depending on how it's scooped, packed, or leveled. Weighing gives the same result every time, which is especially important in baking where precision affects texture and rise.