How Much Is 0.81 Ounces of Black Beans in Cups?
0.81 ounces of black beans equals 0.12 cups. That's 22.96g, and Black beans has a density of 184g per cup. Because ounces measure weight and cups measure volume, the result depends on the ingredient's density.
Formula and Step-by-Step
- Start with 0.81 ounces of black beans
- Convert ounces to grams: 0.81 × 28.35 = 22.96g
- 1 cup of black beans = 184g
- 22.96g ÷ 184g/cup = 0.12 cups
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
These conversions are for dry, uncooked black beans. Cooked legumes absorb water and have a completely different weight per cup.
Black Beans at Different Amounts
How black beans scales across common ounces measurements. Your amount (0.81 ounces) is highlighted.
Other Amounts of Black Beans
| Ounces | US Cups | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.81 ounces | 0.12 cups | 0.12 cups | 0.10 cups |
| 1 ounce | 0.15 cups | 0.15 cups | 0.13 cups |
| 2 ounces | 0.31 cups | 0.29 cups | 0.26 cups |
| 3 ounces | 0.46 cups | 0.44 cups | 0.38 cups |
| 4 ounces | 0.62 cups | 0.58 cups | 0.51 cups |
| 5 ounces | 0.77 cups | 0.73 cups | 0.64 cups |
| 6 ounces | 0.92 cups | 0.87 cups | 0.77 cups |
| 8 ounces | 1.23 cups | 1.17 cups | 1.03 cups |
| 10 ounces | 1.54 cups | 1.46 cups | 1.28 cups |
| 12 ounces | 1.85 cups | 1.75 cups | 1.54 cups |
| 16 ounces | 2.47 cups | 2.33 cups | 2.05 cups |
Understanding the Units
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.
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.