Home› Cooking› Cups of All-Purpose Flour to Ounces
Cooking conversion
Cups of All-Purpose Flour to Ounces
How many ounces are in cups of all-purpose flour? Type a value below to see the result instantly. Cooking conversions depend on the density of each ingredient — the math here uses 0.508 g/mL for all-purpose flour.
Calculator
1 cup of all-purpose flour = 4.2395 oz
Cups of All-Purpose Flour to Ounces Conversion Table
Common values for all-purpose flour:
| Cups of all-purpose flour | Ounces |
|---|---|
| 0.25 cup | 1.0599 oz |
| 0.5 cup | 2.1197 oz |
| 1 cup | 4.2395 oz |
| 2 cup | 8.4789 oz |
| 3 cup | 12.7184 oz |
| 4 cup | 16.9578 oz |
| 5 cup | 21.1973 oz |
| 8 cup | 33.9157 oz |
| 10 cup | 42.3946 oz |
How this works
All-purpose flour has a density of about 0.508 g/mL (king arthur baking: 1 cup = 120g). That means 1 mL of all-purpose flour weighs 0.508 grams.
Ounces = cups × 4.2395
Note: Spooned and leveled, not packed. Sifted flour is closer to 0.42 g/mL.
Why a cup of all-purpose flour doesn't always weigh the same
Volume measurements are forgiving in some ways and brutal in others. A cup of all-purpose flour can vary by 10-20% in weight depending on how it's measured: spooned vs scooped, packed vs loose, sifted vs unsifted. The density figure used here matches the most common published recipe conventions, but if you're after baking precision, weighing on a kitchen scale is more accurate than measuring by volume.