Bread Flour Substitute Calculator
Make bread flour from plain flour and vital wheat gluten.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
This rough substitution model adds 1.5 teaspoons of vital wheat gluten per cup of all-purpose flour, assuming 125 g per cup and 3 g per teaspoon. Flour density and product composition vary; weigh ingredients and use the product labels for exact quantities. The calculator does not estimate the final protein percentage.
Worked example
calculated with the default values below
Cups of bread flour needed 3 cups Plain (all-purpose) flour 3 cups · Vital wheat gluten 4.5 tsp · Total weight 389 g
General background references
Disclaimer
These calculators give general cooking guidance. Ingredient density, oven calibration, altitude and equipment all vary, and safe minimum internal temperatures always take precedence over timings. Follow the food-safety advice issued by your national authority.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
gluten = 1.5c tsp; grams = 125c + 3·(1.5c); protein = 12.7%
- c
- Cups of flour needed
- gluten
- Vital wheat gluten (teaspoons)
- grams
- Total weight (g)
- protein
- Resulting protein content (%)
1 cup plain flour = 125 g; 1 tsp vital wheat gluten = 3 g; adding 1.5 tsp per cup raises plain flour to about 12.7% protein (bread-flour strength).
Frequently asked questions
How much vital wheat gluten does this substitute use?
The tool adds 1.5 teaspoons of gluten per entered cup of plain flour. For 3 cups, that is 4.5 teaspoons; using its assumptions of 3 g per teaspoon and 125 g per cup, the combined mass is 388.5 g. It does not calculate protein percentage because the flour and gluten product composition is not provided.