How Much Is 1.5 Cups of Peanut Butter in Ounces?
1.5 cups of peanut butter weighs 13.65 oz. This is based on peanut butter having a density of 258g per cup. Because cups measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 1.5 cups.
Formula and Step-by-Step
- Start with 1.5 cups of peanut butter
- 1 cup of peanut butter = 258g
- 1.5 × 258 = 387g
- Convert grams to ounces: 387 ÷ 28.3495 = 13.65 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Peanut butter weighs 258g per cup. Natural and processed versions may have slightly different densities.
Peanut Butter at Different Amounts
How peanut butter scales across common cups measurements. Your amount (1.5 cups) is highlighted.
For reference, 1.5 cups of peanut butter (387g) is close in weight to an American football (410g).
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?
There are three cup standards used worldwide. The US cup (236.588 ml) is used in American recipes. The metric cup (250 ml) is standard in Australia, New Zealand, and some parts of Asia. The imperial cup (284.131 ml) appears in older British and Canadian recipes. A metric cup holds about 5.7% more than a US cup, while an imperial cup holds about 20% more. Using the wrong standard can noticeably affect a recipe.
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.