Baking formulas and oven work
Dough Hydration Calculator
Find dough hydration from flour and water weights while keeping salt, starter contributions, and process observations separate.
Define the water side
What the percentage actually compares
Hydration compares water with flour, not with total dough weight. That convention makes formulas comparable when batch size changes.
Starter must be separated into its flour and water contributions. Adding the starter weight to neither side understates both totals and can distort the percentage.
The same numeric hydration can behave differently with whole grain, damaged starch, inclusions, autolyse, mixing intensity, and fermentation time.
The formula record may also need tools that separate starter flour and water and document the flour blend.
Water against total flour
Method basis: All entered flour is the denominator and all counted formula water is the numerator; salt remains outside hydration.
Audit the complete formula
- Break every preferment into flour and water.
- Add formula water from all counted sources.
- Divide total water by total flour.
- Record flour type and dough condition.
A seventy-percent dough
For total flour weight of 1000 g, total water weight of 700 g, salt weight of 20 g, the worked result is dough hydration of 70.0% and total dough weight of 1,720.0 g. Compare the percentage with the mixed dough, not with a universal wet-or-dry label.
Formula hydration in practice
Hydration is a formula ratio rather than a prediction of stickiness.
A scale reading is stronger than a cup conversion for both flour and water.
Temperature and rest can change handling before any ingredient quantity changes.
Hydration notes worth keeping
Keep total flour, total water, flour brands, extraction level, mixing method, and the point when handling was judged beside the result.
For a prefermented dough, reconstruct the totals from the build sheet before calculating hydration. A levain may look like one ingredient on the final mix list while contributing materially to both sides of the ratio.
Use the calculation to compare controlled formula changes. If flour, process, and fermentation all change together, a hydration difference alone cannot explain the finished loaf.
When bassinage or hold-back water is used, record both planned and actually incorporated water. Bench flour should also be noted if enough is added to alter the effective ratio.
Hydration questions
Should oil be included in hydration?
Normally no. Track oil as its own baker’s percentage unless the formula standard explicitly treats it differently.
Should eggs count as water?
Not automatically. Their water content can be estimated for formulation work, but record that convention rather than silently treating whole egg weight as water.
Why does my dough feel drier at the same percentage?
Flour absorption, temperature, mixing, bran, and resting time can change handling without changing the arithmetic.
Can hydration exceed 100%?
Yes. Some highly hydrated or starch-rich formulas can exceed flour weight in water, but the handling and process must be tested for that specific product.