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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.

Dough Hydration Calculator — Aperçu du Ratio en Direct
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Proportion Solver
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    Ratio Simplifier
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      Ratio Scaler
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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 ▼
        Hydration % = (Water Weight / Flour Weight) × 100

        325g water with 500g flour: Hydration = (325/500) × 100 = 65%.

        2 Water Needed for Target Hydration ▼
        Water = Flour Weight × (Target Hydration % / 100)

        For 70% hydration with 1000g flour: Water = 1000 × 0.70 = 700g.

        3 Flour Needed for Target Hydration ▼
        Flour = Water Weight / (Target Hydration % / 100)

        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 :

        1

        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.

        2

        Choisir le Mode

        Sélectionnez le mode de ratio — Résoudre, Simplifier ou Mettre à l'échelle. Chaque mode applique des formules différentes à vos valeurs.

        3

        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
        1 Identify water weight (350g) and total flour weight (500g).
        2 Apply Baker's Percentage formula: Hydration = (Water ÷ Flour) × 100%.
        3 Compute: (350 ÷ 500) × 100% = 70%.
        ✓ Dough Hydration is 70.0%
        Saisie 2 Pizza dough: 1000g flour at 62% hydration
        1 Multiply flour weight by target hydration decimal: 1,000g × 0.62 = 620g water.
        2 Calculate typical salt (2% = 20g) and yeast (0.5% = 5g).
        3 Total batch dough weight = 1,000 + 620 + 20 + 5 = 1,645g.
        ✓ Use 620g water with 1,000g flour
        Saisie 3 Adjust from 65% to 75% hydration for 500g flour batch
        1 Current water at 65%: 500 × 0.65 = 325g water.
        2 Target water at 75%: 500 × 0.75 = 375g water.
        3 Additional water needed: 375 - 325 = 50g water.
        ✓ Add 50g additional water

        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.

        Comprendre les Ratios

        Qu'est-ce qu'un ratio ?

        Un ratio est une comparaison entre deux ou plusieurs quantités indiquant leur rapport de grandeur. Écrit sous la forme A : B, cela se traduit par 'pour chaque unité de A, il y a B unités de B'. Par exemple, un ratio 3 : 4 signifie que pour 3 parts de A, on a 4 parts de B. Les ratios servent en cuisine, construction, finance, science et au quotidien.

        Comment résoudre une proportion ?

        Une proportion est une égalité entre deux ratios : A : B = C : D. Pour trouver le terme manquant, utilisez le produit en croix. Si D est l'inconnue : D = (B × C) / A. Ceci s'explique par le fait que dans des ratios équivalents, les produits en diagonale sont égaux : A × D = B × C. Notre solveur résout cela instantanément : saisissez 3 valeurs et il calcule la quatrième.

        Comment simplifier un ratio ?

        Pour simplifier un ratio, trouvez le Plus Grand Commun Diviseur (PGCD) des deux nombres, puis divisez chacun d'eux par ce diviseur. Exemple : 24 : 36 — le PGCD de 24 et 36 est 12. 24 ÷ 12 = 2 et 36 ÷ 12 = 3. Le ratio simplifié est 2 : 3. Notre simplificateur trouve le PGCD et réduit le ratio automatiquement.

        Qu'est-ce que le changement d'échelle d'un ratio et quand sert-il ?

        Changer l'échelle d'un ratio signifie multiplier ses deux termes par un même nombre afin de créer un ratio équivalent, plus grand ou plus petit. Par exemple, un ratio de 2 : 5 mis à l'échelle par 3 donne 6 : 15. Cela s'applique pour adapter les ingrédients d'une recette (double ou triple), dessiner des plans de construction à l'échelle, ou modifier des volumes de liquides.

        Quelle est la différence entre un ratio et une fraction ?

        Un ratio A : B compare deux quantités entre elles (rapport part-part), tandis qu'une fraction A/B représente généralement une proportion d'un tout (rapport part-tout). Cependant, on peut modéliser tout ratio sous forme de fraction : 3 : 4 équivaut à 3/4 = 0,75. La principale différence réside dans le contexte d'utilisation.