Dough Hydration Calculator
Calculate dough hydration as a baker's percentage from flour and water weights, or find the exact water amount needed for any target hydration level. Whether you are baking Neapolitan pizza at 62%, artisan sourdough at 75%, or ciabatta at 85%, this calculator delivers precise measurements for consistent results.
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What is Dough Hydration?
Dough hydration is the ratio of total water weight to total flour weight in a recipe, expressed as a baker's percentage. At 65% hydration, the dough contains 65 grams of water for every 100 grams of flour. This single number is the most important variable in bread baking — it determines the dough's handling characteristics, final crumb structure, crust texture, and oven spring behavior.
In baker's percentages, flour is always defined as 100%, and every other ingredient is expressed relative to it. Hydration is the most critical of these percentages because it controls gluten development, yeast activity, starch gelatinization, and Maillard browning. Low hydration (55-60%) creates dense, easy-to-shape doughs like bagels. Medium hydration (63-70%) suits sandwich loaves. High hydration (72-85%) produces open-crumb artisan breads like ciabatta and focaccia.
Formules et Équations utilisées
Ce calculateur s'appuie sur 5 équations fondamentales :
1 Hydration Percentage ▼
325g water with 500g flour: Hydration = (325/500) × 100 = 65%.
2 Water Needed for Target Hydration ▼
For 70% hydration with 1000g flour: Water = 1000 × 0.70 = 700g.
3 Flour Needed for Target Hydration ▼
For 65% hydration with 390g water: Flour = 390 / 0.65 = 600g.
Explore all calculation options on the Calculateur de Ratio home page.
Comment utiliser ce calculateur
Pour utiliser ce Calculateur de Ratio, suivez ces 3 étapes :
Saisir les Valeurs
Saisissez les valeurs de ratio connues dans les champs. Laissez un champ vide — c'est la valeur manquante que le calculateur va chercher à résoudre.
Choisir le Mode
Sélectionnez le mode de ratio — Résoudre, Simplifier ou Mettre à l'échelle. Chaque mode applique des formules différentes à vos valeurs.
Obtenir les Résultats
Cliquez sur Calculer. L'écran de résultats affiche la réponse avec une barre de ratio interactive, un diagramme circulaire et le détail des calculs.
Exemples Pratiques et Solutions Étape par Étape
Voici 3 exemples de calculs résolus avec les étapes détaillées grâce à ce calculateur :
Saisie 1 Calculate hydration: 350g water, 500g flour
Saisie 2 Pizza dough: 1000g flour at 62% hydration
Saisie 3 Adjust from 65% to 75% hydration for 500g flour batch
Foire Aux Questions
What is the best hydration for bread? ▼
It depends on the bread type. For beginners, 65-68% is manageable and produces excellent sandwich bread. Artisan loaves shine at 68-75%. Ciabatta and focaccia require 75-85%. Higher hydration gives larger holes and lighter crumb but is harder to shape and handle.
What is baker's percentage? ▼
Baker's percentage is a system where each ingredient is expressed as a percentage of the total flour weight. Flour is always 100%. So a recipe with 500g flour, 350g water, and 10g salt has 70% hydration and 2% salt. This makes recipes scalable and universally comparable regardless of batch size.
Does whole wheat flour need more water? ▼
Yes. Whole wheat flour absorbs approximately 5-10% more water than white all-purpose flour because bran particles soak up liquid. If your white flour recipe uses 68% hydration, increase to 73-78% when substituting 100% whole wheat flour.
What hydration is pizza dough? ▼
Neapolitan pizza: 58-62% for a soft, supple dough that stretches thin. New York style: 62-66% for a foldable, slightly chewy slice. Sicilian/Detroit pan: 70-75% for a light, airy, focaccia-like thick crust. Higher hydration creates lighter texture but is stickier to handle.
How does hydration affect oven spring? ▼
Higher hydration generally produces better oven spring because more water converts to steam during baking, expanding the crumb. However, above approximately 80%, the dough may lack the structural strength to rise vertically and instead spreads laterally, especially without proper pre-shaping and surface tension.
What is autolyse and how does it relate to hydration? ▼
Autolyse is resting mixed flour and water (without salt or yeast) for 20-60 minutes before the full mix. It allows flour to fully absorb water and begins gluten development passively. Autolyse makes high-hydration doughs significantly easier to handle by improving water absorption before adding strengthening ingredients.
How do I calculate hydration when using a sourdough starter? ▼
A 100% hydration starter is 50% flour and 50% water by weight. Add the starter's flour to your total flour and its water to your total water before calculating. For example: 450g flour + 100g starter (50g flour + 50g water) + 330g water = (450+50) flour, (330+50) water = 380/500 = 76% hydration.
What hydration is sourdough bread? ▼
Most sourdough bread recipes use 70-78% hydration. The extended fermentation time in sourdough baking makes the dough more extensible, allowing bakers to use higher hydration than yeasted breads. Beginner sourdough bakers should start at 70% and work up to 75%+ as their shaping skills improve.
Can dough hydration be too high? ▼
Yes. Above 85-90% hydration, most doughs become extremely difficult to shape, lose structural integrity, and bake flat rather than rising tall. Very high hydration works only for pan-baked breads (focaccia, ciabatta) where the pan provides support during baking.
How does egg or milk affect dough hydration? ▼
Eggs are approximately 75% water and 13% fat. Milk is about 87% water. When using these liquid ingredients, count their water content toward total hydration. For example, 50g of whole egg contributes about 37.5g of water to your hydration calculation.
What is the difference between hydration and moisture content? ▼
Hydration is the baker's percentage (water ÷ flour × 100), which describes the recipe ratio. Moisture content is the percentage of water in the finished baked product (typically 35-40% for bread). They are related but not the same — baking evaporates a significant portion of the water.
Why is my high-hydration dough so sticky? ▼
High-hydration doughs (above 72%) are naturally sticky. This is expected. Use wet hands, a bench scraper, and minimal flour when handling. The stretch-and-fold technique (instead of traditional kneading) builds gluten structure without adding excess flour that would change the hydration.