The Baker's Percentage Calculator computes ingredient weights for any bread recipe using the professional baker's percentage system where all ingredients are expressed as percentages of flour weight. The universal scaling tool for professional bakers and artisan bread enthusiasts worldwide.
350
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10
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5
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0
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865
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0.7
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173
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350
g
10
g
5
g
0
g
0
g
865
g
0.7
x
173
%
Every professional baker, from the smallest artisan bakery to the largest industrial bread plant, works in baker's percentages rather than recipe volumes. The reason is elegantly practical: a formula expressed in baker's percentages is infinitely scalable — multiply total flour by any factor and all other ingredients scale proportionally by the same factor. The calculator for baker's percentage takes your formula percentages and total flour weight and instantly returns the gram weight of every ingredient, eliminating the arithmetic errors that derail home bakers scaling recipes for larger batches.
In the baker's percentage (BP) system, flour weight is always 100% regardless of quantity, and all other ingredients are expressed as a percentage of that flour weight:
Ingredient weight (g) = (Baker's % / 100) × Flour weight (g)
A basic sourdough formula: flour 100%, water 75%, salt 2%, levain 20%. For 500 g flour: water = 375 g, salt = 10 g, levain = 100 g, total dough = 985 g. For 2,000 g flour: water = 1,500 g, salt = 40 g, levain = 400 g, total dough = 3,940 g. The percentages are identical regardless of batch size — this is why professional bakers express formulas this way. Note that total baker's percentages sum to more than 100% because each ingredient is a percentage of flour, not of total dough weight. Use this online calculator for any bread formula. The bread hydration calculator provides focused analysis of the water percentage.
Hydration (water as a % of flour) is the single most impactful variable in bread formulation:
Higher hydration increases crust crispiness (more steam during baking) and open crumb but demands greater dough handling skill and typically longer fermentation for structural development.
At 1.8–2.2% BP, salt serves multiple simultaneous functions in bread dough beyond seasoning:
The sourdough starter calculator and baking ratio calculators cover the complete artisan bread formulation toolkit.
Many advanced bread formulas incorporate preferments (poolish, biga, levain) and multiple flour types. In baker's percentage, all flour types are summed to equal 100%: if a formula uses 80% bread flour and 20% whole wheat, the combined flour is 100% and hydration is calculated against the total flour weight. Preferments introduce a bookkeeping complexity: the flour and water contained within the preferment must be counted in the total formula calculations even though they are prepared and fermented separately. Professional bakers track "overall formula" and "final dough formula" as separate percentage sheets for clarity when managing complex preferment systems.
Baker's percentage is calculated by dividing the weight of any ingredient by the total flour weight, then multiplying by 100:
Ingredient % = (Ingredient Weight / Flour Weight) × 100
Conversely, to find the ingredient weight from a percentage:
Ingredient Weight = (Percentage / 100) × Flour Weight
For example, with 500g of flour at 70% hydration: Water = (70/100) × 500 = 350g. Salt at 2% = (2/100) × 500 = 10g. Yeast at 1% = (1/100) × 500 = 5g. Total dough weight is the sum of all ingredients including flour.
Common baker's percentage ranges: Hydration 60-65% produces firm, easy-to-shape dough ideal for rolls and sandwich breads. Hydration 65-75% is the standard range for most artisan breads including baguettes. Hydration 75-85% creates open-crumb sourdoughs and ciabatta. Salt is typically 1.8-2.2% for ideal flavor and gluten development. Instant dry yeast ranges from 0.5-1.5% depending on fermentation time; longer fermentation uses less yeast. Oil or fat from 2-5% tenderizes crumb; above 10% produces enriched breads like brioche.
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A 72% hydration artisan loaf with no enrichments. The total dough weight of 874g is ideal for one large 900g loaf (accounting for baking loss).
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An enriched sandwich bread with oil and sugar for a soft, tender crumb. The 1062g total dough weight is perfect for two standard 500g loaf tins.
Flour is the primary structural ingredient in bread, and all other ingredients function in relation to it. Using flour as the 100% baseline makes it easy to understand ingredient ratios at a glance and scale any recipe proportionally without recalculation.
Yes, and this is normal. Because all percentages are relative to flour weight, the total of all percentages will always exceed 100%. A simple dough with 70% water, 2% salt, and 1% yeast would have percentages totaling 173%, which is perfectly correct in baker's math.
Beginner bakers should start with 65-70% hydration. Doughs in this range are soft and workable without being overly sticky, making them easier to knead and shape by hand. As your technique improves, you can gradually work up to higher hydration doughs.
Weigh all ingredients in grams. Divide every ingredient's weight by the total flour weight and multiply by 100. This gives the baker's percentage for each ingredient. If a recipe uses multiple flours, the total flour weight is the sum of all flours.
Most bakers use 1.8-2.2% salt by baker's percentage. Below 1.5% the bread tastes flat and fermentation can become too rapid. Above 2.5% the bread may taste too salty and salt will inhibit yeast activity. The standard 2% is a reliable starting point.
Sugar provides food for yeast, promotes browning through caramelization and Maillard reactions, tenderizes the crumb, and adds sweetness. At 2-5% it subtly enriches the bread. Above 10% (enriched breads), you may need to reduce yeast slightly as high sugar can stress yeast cells.
Yes, baker's percentages work for gluten-free baking, but the flour baseline becomes the total blend of gluten-free flours and starches. Hydration percentages for gluten-free doughs are often higher (80-100%+) because these flours absorb water differently than wheat flour.
Preferment percentage refers to how much of the total flour is fermented in advance as a poolish, biga, or levain. A 20% preferment means 20% of the total flour is incorporated into a pre-ferment. Preferments develop complex flavors and improve dough extensibility.
To scale a recipe, simply change the flour weight and keep all percentages the same. The calculator will automatically compute new ingredient weights. To scale to a specific total dough weight, divide the target weight by the sum of all percentages divided by 100, then use that as your new flour weight.
Baker's percentages ensure ingredient ratios are consistent, but final results are also affected by flour protein content, water temperature, ambient temperature, fermentation time, shaping technique, and oven conditions. Percentages are the starting point; environment and technique determine the final result.
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