How Much Is 31.5 Grams of All-Purpose Flour in Cups?
31.5 grams of all-purpose flour equals 0.25 cups. All-purpose flour has a density of 125.16g per cup. A lighter ingredient like cocoa powder (86g/cup) would fill even more volume at the same weight, which is why ingredient-specific conversions matter.
Formula and Step-by-Step
- Start with 31.5 grams of all-purpose flour
- 1 cup of all-purpose flour = 125.16g
- 31.5g ÷ 125.16g/cup = 0.25 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 grams measurements. Your amount (31.5 grams) is highlighted.
Other Amounts of All-Purpose Flour
| Grams | US Cups | Metric Cup | Imperial Cup |
|---|---|---|---|
| 5 grams | 0.04 cups | 0.04 cups | 0.03 cups |
| 10 grams | 0.08 cups | 0.08 cups | 0.07 cups |
| 25 grams | 0.20 cups | 0.19 cups | 0.17 cups |
| 31.5 grams | 0.25 cups | 0.24 cups | 0.21 cups |
| 50 grams | 0.40 cups | 0.38 cups | 0.33 cups |
| 75 grams | 0.60 cups | 0.57 cups | 0.50 cups |
| 100 grams | 0.80 cups | 0.76 cups | 0.67 cups |
| 150 grams | 1.20 cups | 1.13 cups | 1.00 cup |
| 200 grams | 1.60 cups | 1.51 cups | 1.33 cups |
| 250 grams | 2.00 cups | 1.89 cups | 1.66 cups |
| 500 grams | 3.99 cups | 3.78 cups | 3.33 cups |
Understanding the Units
What is a Gram?
Weighing ingredients in grams eliminates the variability of volume measurements. A cup of flour can weigh anywhere from 120g to 160g depending on how it was scooped, but 120g of flour is always 120g of flour.
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.