How Much Is 0.5 Cups of Peanut Butter in Ounces?
Converting 0.5 cups of peanut butter to ounces gives 4.55 oz. One cup of peanut butter weighs 258g, so 0.5 cups is 0.5 × 258 = 129g (4.55 oz). This conversion is specific to peanut butter because each ingredient has a different density.
Formula and Step-by-Step
- Start with 0.5 cups of peanut butter
- 1 cup of peanut butter = 258g
- 0.5 × 258 = 129g
- Convert grams to ounces: 129 ÷ 28.3495 = 4.55 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Peanut butter should be stirred before measuring if the oil has separated. An unmixed jar will give inconsistent measurements.
Peanut Butter at Different Amounts
How peanut butter scales across common cups measurements. Your amount (0.5 cups) is highlighted.
For reference, 0.5 cups of peanut butter (129g) is close in weight to a small apple (130g).
Other Amounts of Peanut Butter
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 2.28 oz | 2.40 oz | 2.73 oz |
| 0.33 cups | 3.00 oz | 3.17 oz | 3.61 oz |
| 0.5 cups | 4.55 oz | 4.81 oz | 5.46 oz |
| 0.75 cups | 6.83 oz | 7.21 oz | 8.20 oz |
| 1 cup | 9.10 oz | 9.62 oz | 10.93 oz |
| 1.5 cups | 13.65 oz | 14.42 oz | 16.39 oz |
| 2 cups | 18.20 oz | 19.23 oz | 21.86 oz |
| 3 cups | 27.30 oz | 28.85 oz | 32.79 oz |
| 4 cups | 36.40 oz | 38.47 oz | 43.72 oz |
| 5 cups | 45.50 oz | 48.08 oz | 54.65 oz |
Understanding the Units
What is a Cup?
A cup is a US customary unit of volume equal to 236.588 milliliters or 8 fluid ounces. It is the most common volume measurement in American recipes. One cup can be divided into 16 tablespoons or 48 teaspoons.
What is an Ounce?
An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.