Peanut Butter Cups to Ounces
Convert any amount of peanut butter between cups and ounces. 1 cup of peanut butter equals 9.10 oz. Use the calculator for custom amounts, or choose an amount below.
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Popular Recipe Amounts
Common peanut butter measurements found in recipes.
Other Units for Peanut Butter
Convert peanut butter from cups to other units. Each link has its own calculator and conversion amounts.
Similar Ingredients
Measuring Tip
Spoon peanut butter into the measuring cup and pack gently to fill gaps. Do not scoop directly from the jar, which traps air.
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
1 cup of peanut butter equals 9.10 oz. Choose an amount below for a full breakdown, or enter any quantity in the calculator.
The most accurate way is to weigh peanut butter on a kitchen scale. If you are measuring by volume, spoon it into the measuring cup and pack gently to fill gaps. Do not scoop directly from the jar, which traps air and gives an inconsistent amount.
Close, but not exactly. The cups to ounces conversion for peanut butter may vary slightly between brands depending on moisture content and how the ingredient is measured.
Weighing is more consistent than volume measuring. A cup of peanut 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.