How Many Grams in a Cup of Bread Flour?
One cup of bread flour weighs 120 grams when spooned into the cup and levelled off with a straight edge and this page converts bread flour between cups, grams, tablespoons, teaspoons, millilitres and ounces, with full tables, worked examples and a free converter.
| Measure | Weight |
|---|---|
| 1 cup | 120 g |
| 1 tablespoon | 7.5 g |
| 1 teaspoon | 2.5 g |
| 1 cup (volume) | 236.6 ml |
| 1 cup in ounces | 4.2 oz |
| 100 grams | 0.83 cups |
One cup of bread flour weighs 120 grams — exactly the same as all-purpose flour. The difference between the two is protein, not weight: bread flour's 12–14 percent protein builds the gluten that makes loaves chewy. Here are the full bread flour conversion tables, a converter for any amount, and how to measure it so doughs stay consistent.
Convert bread flour instantly
This converter uses the same chef-reviewed database as our Cups to Grams converter for all 128 ingredients. Weights assume a US cup of 236.588 ml; see our methodology and sources.
Cups to grams: bread flour
| Cups | Grams |
|---|---|
| ¼ cup | 30 g |
| ⅓ cup | 40 g |
| ½ cup | 60 g |
| ⅔ cup | 80 g |
| ¾ cup | 90 g |
| 1 cup | 120 g |
| 1½ cups | 180 g |
| 2 cups | 240 g |
| 3 cups | 360 g |
| Measure | Grams |
|---|---|
| 1 tablespoon | 7.5 g |
| 1 teaspoon | 2.5 g |
| 1 cup in ounces | 4.2 oz |
Grams to cups: bread flour
| Grams | Cups (decimal) | Cups (fraction) |
|---|---|---|
| 50 g | 0.42 cups | ⅜ cups |
| 100 g | 0.83 cups | ⅞ cups |
| 125 g | 1.04 cups | 1 cup |
| 150 g | 1.25 cups | 1 ¼ cups |
| 200 g | 1.67 cups | 1 ⅔ cups |
| 250 g | 2.08 cups | 2 ⅛ cups |
| 300 g | 2.5 cups | 2 ½ cups |
| 400 g | 3.33 cups | 3 ⅓ cups |
| 500 g | 4.17 cups | 4 ⅛ cups |
Working with more than one ingredient? The grams in a cup chart puts 40 ingredients in one table, and the Whole Recipe Converter converts a full ingredient list in a single paste.
How to measure bread flour properly
Same weight, different flour. Bread flour and all-purpose flour both weigh 120 grams per spooned-and-levelled cup, so you can swap them cup for cup or gram for gram without touching the quantities. What changes is the crumb: bread flour gives a taller, chewier loaf; all-purpose gives a softer one.
Bread bakers should weigh, full stop. Most serious bread recipes work in baker's percentages, where every ingredient is a percentage of the flour weight. A 20-gram error in a cup of flour quietly shifts the hydration of the whole dough, so bread flour is the ingredient where the scale pays for itself fastest.
Expect it to drink a little more water. At equal weight, bread flour absorbs slightly more liquid than all-purpose because of its higher protein. If you swap it into an all-purpose recipe, hold back a spoonful of the water and add it only if the dough feels stiff.
Frequently asked questions
How many grams are in a cup of bread flour?
120 grams, spooned into the cup and levelled off — identical to all-purpose flour. The flours differ in protein content (bread flour is 12–14 percent, all-purpose 10–12 percent), not in what a cup of each weighs.
Can I substitute all-purpose flour for bread flour by weight?
Yes — the swap is one-for-one by weight or by cup, because both are 120 grams per cup. Expect a texture change rather than a failure: bread from all-purpose flour is a little softer and less chewy, and pizza bases stretch a little less willingly.
How many cups is 500 grams of bread flour?
About 4.17 cups — roughly 4 cups plus 2½ tablespoons. The maths is 500 ÷ 120 ≈ 4.17. Bread recipes are usually written in grams precisely because dough hydration is calculated from the flour weight, so weighing is the better route.
Sources: the weight on this page is based on published values from the King Arthur Baking ingredient weight chart and USDA FoodData Central, chosen and checked as described in our methodology.