How Much Is 128 Ounces of All-Purpose Flour in Cups?
Converting 128 ounces of all-purpose flour to cups gives 28.99 cups. First convert to grams (128 oz = 3,628.74g), then divide by the density of all-purpose flour (125.16g per cup). Each ingredient fills a different volume at the same weight.
Formula and Step-by-Step
- Start with 128 ounces of all-purpose flour
- Convert ounces to grams: 128 × 28.35 = 3,628.74g
- 1 cup of all-purpose flour = 125.16g
- 3,628.74g ÷ 125.16g/cup = 28.99 cups
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.
All-Purpose Flour at Different Amounts
How all-purpose flour scales across common ounces measurements. Your amount (128 ounces) is highlighted.
Other Amounts of All-Purpose Flour
| Ounces | US Cups | Metric Cup | Imperial Cup |
|---|---|---|---|
| 1 ounce | 0.23 cups | 0.21 cups | 0.19 cups |
| 2 ounces | 0.45 cups | 0.43 cups | 0.38 cups |
| 3 ounces | 0.68 cups | 0.64 cups | 0.57 cups |
| 4 ounces | 0.91 cups | 0.86 cups | 0.75 cups |
| 5 ounces | 1.13 cups | 1.07 cups | 0.94 cups |
| 6 ounces | 1.36 cups | 1.29 cups | 1.13 cups |
| 8 ounces | 1.81 cups | 1.71 cups | 1.51 cups |
| 10 ounces | 2.27 cups | 2.14 cups | 1.89 cups |
| 12 ounces | 2.72 cups | 2.57 cups | 2.26 cups |
| 16 ounces | 3.62 cups | 3.43 cups | 3.02 cups |
| 128 ounces | 28.99 cups | 27.44 cups | 24.14 cups |
Understanding the Units
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.
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.