How Much Is 7.81 Ounces of Onions (Diced) in Cups?
7.81 ounces of onions (diced) equals 1.38 cups. That's 221.41g, and Onions (diced) has a density of 160g 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 7.81 ounces of onions (diced)
- Convert ounces to grams: 7.81 × 28.35 = 221.41g
- 1 cup of onions (diced) = 160g
- 221.41g ÷ 160g/cup = 1.38 cups
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Raw and cooked produce have very different weights per cup. Cooked vegetables shrink and become denser. These conversions are for raw produce.
Onions (Diced) at Different Amounts
How onions (diced) scales across common ounces measurements. Your amount (7.81 ounces) is highlighted.
Other Amounts of Onions (Diced)
| Ounces | US Cups | Metric Cup | Imperial Cup |
|---|---|---|---|
| 1 ounce | 0.18 cups | 0.17 cups | 0.15 cups |
| 2 ounces | 0.35 cups | 0.34 cups | 0.30 cups |
| 3 ounces | 0.53 cups | 0.50 cups | 0.44 cups |
| 4 ounces | 0.71 cups | 0.67 cups | 0.59 cups |
| 5 ounces | 0.89 cups | 0.84 cups | 0.74 cups |
| 6 ounces | 1.06 cups | 1.01 cup | 0.89 cups |
| 7.81 ounces | 1.38 cups | 1.31 cups | 1.15 cups |
| 8 ounces | 1.42 cups | 1.34 cups | 1.18 cups |
| 10 ounces | 1.77 cups | 1.68 cups | 1.48 cups |
| 12 ounces | 2.13 cups | 2.01 cups | 1.77 cups |
| 16 ounces | 2.83 cups | 2.68 cups | 2.36 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.