Enter the weight of the water and the weight of the flour into the calculator to determine the dough hydration percentage. This calculator can also evaluate any of the variables given the others are known.

Dough Hydration Formula

The following formula is used to calculate the dough hydration percentage.

HP = (Ww / Wf) * 100


  • HP is the hydration percentage (%) Ww is the weight of the water (grams) Wf is the weight of the flour (grams)

To calculate the dough hydration percentage, divide the weight of the water by the weight of the flour, then multiply the result by 100. This will give you the hydration percentage, which indicates the ratio of water to flour in the dough.

What is a Dough Hydration?

Dough hydration refers to the ratio of water to flour in a bread recipe, expressed as a percentage. It is a critical factor in baking as it impacts the dough’s consistency, the bread’s texture, and the crust’s appearance. Higher hydration results in a looser, stickier dough and a lighter, airier bread with large holes, while lower hydration results in a firmer dough and a denser bread with small holes.

How to Calculate Dough Hydration?

The following steps outline how to calculate the Dough Hydration using the formula: HP = (Ww / Wf) * 100

  1. First, determine the weight of the water (Ww) in grams.
  2. Next, determine the weight of the flour (Wf) in grams.
  3. Next, use the formula HP = (Ww / Wf) * 100 to calculate the hydration percentage.
  4. Finally, calculate the Dough Hydration.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

weight of the water (Ww) = 200 grams

weight of the flour (Wf) = 500 grams