Convert Cups to Grams: All-Purpose Flour
Convert cups of all-purpose flour to grams with this complete reference table. 1 cup of all-purpose flour = 125g (USDA FoodData Central, spooned-and-leveled method). Use the table below for fractions from 1/8 cup up to 4 cups. For precision baking, weight measurements in grams are always more reliable than volume measurements in cups, because all-purpose flour density can vary by measuring technique.
All-Purpose Flour Cups to Grams Table
| Cups | Grams |
|---|---|
| 1/8 cup | 15.6g |
| 1/4 cup | 31.3g |
| 1/3 cup | 41.7g |
| 1/2 cup | 62.5g |
| 2/3 cup | 83.3g |
| 3/4 cup | 93.8g |
| 1 cup | 125g |
| 1 1/4 cups | 156.3g |
| 1 1/2 cups | 187.5g |
| 2 cups | 250g |
| 3 cups | 375g |
| 4 cups | 500g |
Based on USDA FoodData Central data (1 US cup = 240ml = 16 tablespoons = 48 teaspoons). Note: All-purpose flour density varies by measuring technique. Spooned into cup: ~125g. Scooped (packed): ~150g. Sifted: ~110g. USDA FoodData Central uses spooned method as standard. King Arthur Baking recommends 120g (sifted standard). The difference matters in baking — use a scale for best results.
About All-Purpose Flour Density
The density of all-purpose flour determines how much it weighs per unit of volume. At 0.521g/ml, 1 US cup (240ml) of all-purpose flour weighs 125g under USDA standard conditions.
Volume measurements can vary by ±10–20% depending on technique (sifted vs. spooned vs. scooped). For consistent baking results, use a kitchen scale with gram measurements whenever possible. The USDA standard (spooned-and-leveled) is the reference point for all values on this page.
Frequently Asked Questions
How many grams is 1 cup of all-purpose flour?
1 cup of all-purpose flour weighs 125 grams (USDA FoodData Central, spooned-and-leveled method, 1 US cup = 240ml).
How many grams is 1/2 cup of all-purpose flour?
1/2 cup of all-purpose flour weighs 63 grams.
How many grams is 1/4 cup of all-purpose flour?
1/4 cup of all-purpose flour weighs 31 grams.
Does measuring technique affect the weight of all-purpose flour?
Yes. Sifted all-purpose flour can weigh up to 20% less than packed or scooped. The USDA standard (spooned-and-leveled) of 125g/cup is the most reliable baseline.