Dough Hydration Calculator

What is Dough Hydration?

Dough hydration is the ratio of water to flour in your bread recipe, expressed as a percentage. This fundamental concept in baking is calculated using a simple formula: $$ \text{Hydration \%} = \frac{\text{Water Weight}}{\text{Flour Weight}} \times 100 $$ For example, if your recipe uses 350g of water and 500g of flour, the hydration is $(350 \div 500) \times 100 = 70\%$.

Hydration dramatically affects every aspect of your bread including texture and crumb structure, crust quality, dough workability, fermentation activity, and shelf life. Higher hydration creates a more open, airy crumb while lower hydration produces a tighter, more uniform texture.

Understanding Baker's Percentage

Baker's percentage (also called baker's math) is the professional standard for expressing bread recipes. In this system, flour is always 100%, and all other ingredients are expressed relative to flour weight. For example, water at 70% means 70g of water for every 100g of flour, salt at 2% means 2g of salt per 100g of flour, and yeast at 1% means 1g of yeast per 100g of flour. This system makes it incredibly easy to scale recipes while maintaining exact proportions.

Hydration Level Guide

Different hydration levels produce dramatically different results:

• Low Hydration (50-57%): Very stiff doughs for bagels and pretzels. Easy to handle but produces dense, chewy textures.
• Medium-Low (58-64%): Firm doughs ideal for sandwich breads and dinner rolls.
• Medium (65-71%): Soft, slightly sticky doughs perfect for pizza, focaccia, and artisan breads.
• High (72-79%): Wet, sticky doughs for ciabatta and high-hydration sourdoughs.
• Very High (80%+): Almost batter-like consistency requiring advanced handling skills.

Flour Type Considerations

Different flours absorb water differently. Bread flour with high protein content (12-14%) can handle 2-5% more hydration than all-purpose flour. Whole wheat flour with its bran content needs 5-10% more water. Rye flour is very absorbent and may need 10-15% more water than wheat flour. Use our cooking converter to switch between measurement units.