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How to Calculate Bread Hydration

What is Bread Hydration?

Bread hydration is the ratio of water to flour in a dough, expressed as a percentage. It is the single most important factor determining dough texture, crumb structure, and crust. Higher hydration creates more open, chewy crumbs; lower hydration creates denser, structured loaves.

Formula

Baker\'s hydration = (Water weight / Flour weight) × 100

Step-by-Step Guide

  1. 1Baker's hydration = (Water weight / Flour weight) × 100
  2. 2Example: 375g water with 500g flour = 75% hydration
  3. 3Include all water sources: liquid from starter, milk, eggs (60% water)

Worked Examples

Input
300g water, 500g flour
Result
60% hydration
Good for bagels and pretzels — stiff, workable
Input
375g water, 500g flour
Result
75% hydration
Classic sourdough — open crumb
Input
450g water, 500g flour
Result
90% hydration
Ciabatta / focaccia — very wet, sticky dough

Frequently Asked Questions

What is Bread Hydration?

Bread hydration is the ratio of water to flour in a dough, expressed as a percentage. It is the single most important factor determining dough texture, crumb structure, and crust

How accurate is the Bread Hydration calculator?

The calculator uses the standard published formula for bread hydration. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Bread Hydration calculator use?

This calculator works with inches, percentages, watts. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Bread Hydration calculator use?

The core formula is: Baker\'s hydration = (Water weight / Flour weight) × 100. Each step in the calculation is shown so you can verify the result manually.

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