Baker's Percentage & Hydration Calculator
Flour is always 100%. Master hydration, salinity, and yeast ratios to scale artisan sourdough boules, Detroit-style crispy edge pan pizza, and soft everyday sandwich bread.
| Ingredient | Baker's % | Grams (Scale) | Ounces |
|---|---|---|---|
| Bread / All-Purpose Flour | 100.0% | 500g | 17.6 oz |
| Water (Lukewarm 90°F) | 62% | 310g | 10.9 oz |
| Fine Sea Salt | 2.8% | 14g | 0.49 oz |
| Instant Dry Yeast | 0.2% | 1g | 0.04 oz |
| Dough Style | Hydration % | Salt % | Yeast % | Fermentation | Bake Temp |
|---|---|---|---|---|---|
| Neapolitan Pizza Dough (High Heat) | 62% | 2.8% | 0.2% | Overnight Cold (24hr-72hr) | 550°F |
| Detroit Style Pan Pizza (Crispy Cheese Edge) | 72% | 2.2% | 1% | Same-Day (2hr) | 500°F |
| Dutch Oven Artisan Country Loaf | 75% | 2% | 0.4% | Overnight Cold (24hr-72hr) | 450°F |
| Soft Everyday Sandwich Loaf | 64% | 2% | 1.5% | Same-Day (2hr) | 350°F |
| Cast Iron Olive Oil Focaccia | 82% | 2.5% | 0.8% | Same-Day (2hr) | 425°F |
The Law of Baker's Percentages: Why Flour is Always 100%
In professional bread and pizza baking, standard recipe percentages fail because total dough weight shifts with every batch. Instead, bakers normalize all formulas to Total Flour Weight = 100.0%.
Every other ingredient is expressed as a direct mathematical ratio of that flour weight:
Hydration (the water-to-flour percentage) dictates dough rheology, oven spring, and interior crumb openness:
Tightly organized gluten network with low extensibility. Easy to shape by hand, holds structural shape during proofing, and produces a dense, uniform, velvety crumb ideal for slicing.
The golden weeknight sweet spot. Provides sufficient free water to steam and expand rapidly during oven spring without turning the dough too slack or sticky to stretch onto a peel.
Fluid dough that cannot be kneaded traditionally. Generates massive, irregular open air pockets (custardy crumb) and crisp, blistered exterior crusts when baked in oiled steel pans.
Why Salt is Never Optional: The 2.0% Rule
In bread dough, salt (NaCl) serves critical biochemical functions far beyond seasoning:
- Gluten Ionic Shielding: Glutenin and gliadin protein strands carry matching electrical charges that naturally repel one another. Sodium (Na+) and chloride (Cl-) ions neutralize these repelling charges, allowing the protein chains to slide tightly together into a strong, cohesive, elastic membrane that traps fermentation gas bubbles.
- Enzymatic & Yeast Osmotic Brake: Salt exerts osmotic pressure on yeast cells, moderating their consumption of maltose and glucose. Without salt, yeast ferments violently out of control, exhausting all sugars before the dough has time to develop complex organic acids, leaving a pale crust and flat flavor.
- Standard Salinity: Professional bakers consistently formulate salt at 2.0% to 2.5%. Less than 1.8% yields slack, sticky dough; greater than 3.0% suppresses yeast activity excessively.
Frequently Asked Questions: Baker's Percentages & Hydration
Volumetric measuring cups are inherently imprecise. A fluid ounce cup reading can vary by 5% to 10% depending on angle and surface tension meniscus. Furthermore, 1 gram of water equals exactly 1 milliliter at room temperature. Weighing water on the same digital scale as flour eliminates measuring errors and dirty dishes.
Autolyse is mixing only the flour and water together and resting for 20 to 45 minutes before adding salt or yeast. During this rest, endogenous protease enzymes relax protein chains and amylase enzymes convert complex starches into fermentable sugars. Gluten develops spontaneously without physical kneading, resulting in a silkier, more extensible dough.
Standard all-purpose flour contains 10% to 11% protein, which saturates with water around 65% hydration. At 75%+ hydration, all-purpose flour turns into soup. Bread flour (12.5% to 14% protein) contains higher concentrations of glutenin and gliadin, creating a robust structural web capable of absorbing high water volume while maintaining tension.
Instant Dry Yeast is more concentrated and has a smaller particle size with higher live cell counts. If a recipe calls for Active Dry Yeast and you are using Instant Yeast, multiply by 0.75 (use 25% less Instant Yeast). Instant Yeast can be mixed directly with dry flour, whereas Active Dry should be bloomed in lukewarm water first.