Baking Ratio Calculator
Baker's Percentages: Flour Is Always 100%
Professional bakers rarely write recipes in cups. Instead, every ingredient is expressed as a percentage of the total flour weight — flour itself is fixed at 100%, and everything else (water, salt, yeast, sugar, fat) is stated relative to it. This makes it trivial to scale a formula to any batch size and to compare two recipes structurally, regardless of how much dough each one actually makes.
The Formula
Flour is always the 100% reference in baker's percentages; the result shows how much of a given ingredient to use relative to the total flour weight, by weight, not by volume.
Where This Matters
- Bread formulas — hydration is expressed this way (e.g. "70% hydration" means 70g of water per 100g of flour).
- Recipe scaling — once a formula is in percentages, multiplying by any target flour weight instantly produces a full-batch recipe.
- Comparing recipes — two bread recipes with wildly different total weights become directly comparable once reduced to baker's percentages.
Typical Bread Hydration Ranges
| Bread style | Typical hydration (water as % of flour) |
|---|---|
| Bagels / pretzels | 50–58% |
| Sandwich loaf | 60–65% |
| Artisan hearth bread | 68–75% |
| Ciabatta / focaccia | 75–90% |
Ranges reflect commonly published baking references and vary by flour type and technique.
How to Use This Calculator
- Enter the Ingredient Weight (g) for the ingredient you want to express as a percentage.
- Enter the Flour Weight (g) — the 100% reference for the formula.
- Select Calculate to get that ingredient's baker's percentage.
Related Calculations
Once you know your ratios, the Recipe Scaling Calculator can scale a full ingredient list to a new batch size, and the Unit Converter for Recipes converts between grams and volume measures.