Dough Hydration Calculator

Calculate how much additional water to add when your recipe includes eggs, milk, or other liquids. Accounts for the water content already present in each ingredient.

Inputs

Flour weight

Target hydration

Number of eggs

Egg hydration factor

Milk used

Milk hydration factor

Tab to move between fields

Results

Total water needed

650 g

≈ 6 sticks of butter

Additional water to add

650 g

≈ 6 sticks of butter

Water from eggs0 g

Water from milk0 g

Total dough weight1,650 g

How to Use This Calculator

Enter the total flour weight in grams.
Set the target hydration percentage for your bread style.
Enter the number of eggs and grams of milk used, along with their hydration factors.
The calculator shows total water needed, water contributed by eggs and milk, and the additional water to add directly.
Add the 'Additional water to add' amount plus the egg and milk water to hit your precise target hydration.

How the result changes with Flour weight

Flour weight	Total water needed	Additional water to add
10,001	6,500.65 g	6,500.65 g
35,001	22,750.65 g	22,750.65 g
65,000	42,250 g	42,250 g
90,000	58,500 g	58,500 g

What each input means

Flour weight: Total flour weight in grams.
Target hydration: Desired hydration as a percentage of flour weight.
Number of eggs: Number of large eggs (~50 g each).
Egg hydration factor: Water content of eggs (typically ~75%).
Milk used: Weight of milk in grams.
Milk hydration factor: Water content of milk (whole milk ~87%).

What each result means

Total water needed: Total water required to reach target hydration.
Water from eggs: Water contributed by eggs.
Water from milk: Water contributed by milk.
Additional water to add: Extra water needed beyond what eggs and milk provide.
Total dough weight: Approximate total dough weight.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Flour weight = 1000, Target hydration = 65, Number of eggs = 0, Egg hydration factor = 75 = 6 input(s) provided
Calculate Total water needed
Total water needed
650 = 650
Calculate Additional water to add
Additional water to add
650 = 650
Calculate Water from eggs
Water from eggs
0 = 0
Calculate Water from milk
Water from milk
0 = 0

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