How Much Is 31.5 Cups of All-Purpose Flour in Ounces?
31.5 cups of all-purpose flour equals 139.07 oz. All-purpose flour has a density of 125.16g per cup (125.16g per cup), which means it's relatively light compared to other common cooking ingredients. For comparison, 31.5 cups of honey would be 377.78 oz.
Formula and Step-by-Step
- Start with 31.5 cups of all-purpose flour
- 1 cup of all-purpose flour = 125.16g
- 31.5 × 125.16 = 3,942.54g
- Convert grams to ounces: 3,942.54 ÷ 28.3495 = 139.07 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
For the most consistent results, weigh all-purpose flour on a kitchen scale. Volume measurements can vary by 20-30% depending on how the flour is scooped.
All-Purpose Flour at Different Amounts
How all-purpose flour scales across common cups measurements. Your amount (31.5 cups) is highlighted.
For reference, 31.5 cups of all-purpose flour (3,942.54g) is close in weight to a gallon of milk (3,900g).
Other Amounts of All-Purpose Flour
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 1.10 oz | 1.17 oz | 1.33 oz |
| 0.33 cups | 1.46 oz | 1.54 oz | 1.75 oz |
| 0.5 cups | 2.21 oz | 2.33 oz | 2.65 oz |
| 0.75 cups | 3.31 oz | 3.50 oz | 3.98 oz |
| 1 cup | 4.41 oz | 4.67 oz | 5.30 oz |
| 1.5 cups | 6.62 oz | 7.00 oz | 7.95 oz |
| 2 cups | 8.83 oz | 9.33 oz | 10.60 oz |
| 3 cups | 13.24 oz | 14.00 oz | 15.91 oz |
| 4 cups | 17.66 oz | 18.66 oz | 21.21 oz |
| 5 cups | 22.07 oz | 23.33 oz | 26.51 oz |
| 31.5 cups | 139.07 oz | 146.95 oz | 167.02 oz |
Understanding the Units
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.
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.