How Much Is 3 Cups of Walnuts in Ounces?
3 cups of walnuts weighs 12.70 oz. This is based on walnuts having a density of 120g 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 3 cups.
Formula and Step-by-Step
- Start with 3 cups of walnuts
- 1 cup of walnuts = 120g
- 3 × 120 = 360g
- Convert grams to ounces: 360 ÷ 28.3495 = 12.70 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
When a recipe says "1 cup nuts, chopped" vs "1 cup chopped nuts," the first means measure whole then chop. The second means chop first then measure. The weight difference can be significant.
Walnuts at Different Amounts
How walnuts scales across common cups measurements. Your amount (3 cups) is highlighted.
For reference, 3 cups of walnuts (360g) is close in weight to a can of soda (355g).
Other Amounts of Walnuts
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 1.06 oz | 1.12 oz | 1.27 oz |
| 0.33 cups | 1.40 oz | 1.48 oz | 1.68 oz |
| 0.5 cups | 2.12 oz | 2.24 oz | 2.54 oz |
| 0.75 cups | 3.17 oz | 3.35 oz | 3.81 oz |
| 1 cup | 4.23 oz | 4.47 oz | 5.08 oz |
| 1.5 cups | 6.35 oz | 6.71 oz | 7.63 oz |
| 2 cups | 8.47 oz | 8.95 oz | 10.17 oz |
| 3 cups | 12.70 oz | 13.42 oz | 15.25 oz |
| 4 cups | 16.93 oz | 17.89 oz | 20.33 oz |
| 5 cups | 21.16 oz | 22.36 oz | 25.42 oz |
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.