How Much Is 1 Cup of Self-Rising Flour in Ounces?
1 cup of self-rising flour weighs 4.23 oz. This is based on self-rising flour 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 1 cup.
Formula and Step-by-Step
- Start with 1 cup of self-rising flour
- 1 cup of self-rising flour = 120g
- 1 × 120 = 120g
- Convert grams to ounces: 120 ÷ 28.3495 = 4.23 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Different flour types have very different weights per cup. Always check the specific flour your recipe calls for rather than using a generic "flour" conversion.
Self-Rising Flour at Different Amounts
How self-rising flour scales across common cups measurements. Your amount (1 cup) is highlighted.
For reference, 1 cup of self-rising flour (120g) is close in weight to a bar of soap (113g).
Other Amounts of Self-Rising Flour
| 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?
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?
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.