Bread flour serving size, cups to grams
Here a serving of white bread flour is counted as 1/4 cup. By the USDA weight of 1 cup (137 g) that is 1.2 oz (34 g), with 124 calories and 4.9 g protein. One cup weighs 4.8 oz (137 g) and one tablespoon 8.6 g.
Serving sizes of white bread flour
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cup | 4.8 oz (137 g) | 497 calories | 19.6 g | 99.7 g | 2.3 g |
| 1 oz | 1 oz (28 g) | 103 calories | 4.1 g | 20.6 g | 0.47 g |
| 100 g | 3.5 oz (100 g) | 363 calories | 14.3 g | 72.8 g | 1.6 g |
Cups to grams
USDA weighs 1 cup of white bread flour at 137 g. Smaller measures follow from it (1 cup = 16 tbsp = 48 tsp).
| Measure | Weight | Calories |
|---|---|---|
| 1 cup | 4.8 oz (137 g) | 497 calories |
| 3/4 cup | 3.6 oz (103 g) | 373 calories |
| 2/3 cup | 3.2 oz (91 g) | 332 calories |
| 1/2 cup | 2.4 oz (68 g) | 249 calories |
| 1/3 cup | 1.6 oz (46 g) | 166 calories |
| 1/4 cup | 1.2 oz (34 g) | 124 calories |
| 1 tbsp | 8.6 g | 31 calories |
| 1 tsp | 2.9 g | 10 calories |
Grams and ounces to cups
| Weight | Volume | Calories |
|---|---|---|
| 1 oz | 3.3 tbsp | 103 calories |
| 100 g (3.5 oz) | 3/4 cup | 363 calories |
| 1 lb (454 g) | 3 1/3 cups | 1647 calories |
What 3.5 oz (100 g) of bread flour looks like
3.5 oz (100 g) of white bread flour is 3.5 oz, or about 3/4 cup. It has 363 calories, 14.3 g protein, 72.8 g carbs and 1.6 g fat.
Keep exploring
Sources
Weights and nutrition: USDA FoodData Central, food portions and nutrients (FoodData Central, April 2026 release, accessed 2026-10-14)
- White bread flour: Flour, bread, white, enriched, unbleached, FDC ID 790146 (Foundation Foods, published 2020-04-01)
- Kitchen measures (1 cup = 16 tbsp, 1 tbsp = 3 tsp): NDSU Extension, Ingredient Substitutions (FN198, J. Garden-Robinson, April 2013 edition). https://www.extension.purdue.edu/extmedia/HHS/HHS-784-W.pdf (accessed 2026-10-12)
How we calculate: each household measure is the gram weight USDA lists for this food. Calories and nutrients are the USDA values per 3.5 oz (100 g) scaled to that weight. 1 oz = 28.35 g and 1 lb = 453.6 g. Cup fractions are rounded to the nearest kitchen measure. A dash (—) means USDA reports no value. How we verify.