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Food & Cooking

Dough Hydration Calculator

Use this dough hydration calculator to calculate bread or pizza dough hydration from flour and water, including preferment flour, preferment water, salt, yeast, and recipe scaling.

dough hydrationbreadflour water ratio

Calculator

Calculate instantly

hydration % = total water / total flour x 100
Total flour equals main flour plus preferment flour. Total water equals main water plus preferment water, or the target water needed for the selected hydration.
  1. Preferment flour contributes to the flour base.
  2. Target mode calculates water from flour; current mode uses the entered water.
  3. This produces the baker's percentage hydration.

Inputs

Baker's percentage inputs

Calculate current hydration or switch to target mode to find water weight.

Breakdown

Clear result breakdown

Review the values that explain the primary result.

Hydration

70%

Water to add outside preferment

700 g

Salt weight

20 g

Yeast weight

5 g

Scaled flour

1,000 g

Scaled water

700 g

Visual comparison

Baker's percentage breakdown

Water, salt, and yeast are calculated relative to total flour, including preferment flour.

Water, salt, and yeast are calculated relative to total flour, including preferment flour.

Practical guidance

Insights for this scenario

Preferment is split correctly

Preferment flour and water are added to their matching totals instead of counting the whole preferment as one ingredient.

Flour type still matters

The same hydration can feel different with strong bread flour, whole grain flour, or different mixing techniques.

Target mode helps recipe design

Use target hydration to calculate water before scaling a batch.

Step-by-step solution

Follow the calculation path from known values to final result.

  1. 1

    Add total flour

    total flour = main flour + preferment flour

    1000 + 0

    Preferment flour contributes to the flour base.

    1,000 g

  2. 2

    Add or calculate total water

    total water = total flour x target hydration

    Target mode calculates water from flour; current mode uses the entered water.

    700 g

  3. 3

    Divide water by flour

    hydration = water / flour x 100

    This produces the baker's percentage hydration.

    70%

Formula explorer

hydration % = total water / total flour x 100

Total flour equals main flour plus preferment flour. Total water equals main water plus preferment water, or the target water needed for the selected hydration.

F(g)
Total flour: Main flour plus preferment flour.
W(g)
Total water: Main water plus preferment water, or target water in target mode.
H(%)
Hydration: Water as a baker's percentage of total flour.

Assumptions and references

Units

  • g

Assumptions

  • Weights are entered consistently, using grams in the interactive Stage 3A calculator.
  • Preferment flour and water values are known or estimated.
  • Dough behavior depends on ingredients and technique beyond hydration percentage.

Limitations

  • Counting total starter weight as water.
  • Ignoring preferment flour.
  • Comparing dough feel across different flours using hydration alone.
  • Results depend on the accuracy of the values entered.
  • Rounding may make displayed values slightly different from exact intermediate calculations.

Worked examples

Easy

Bread hydration example

Known values

  • Flour: 1000 g
  • Water: 700 g

Calculation

  • 1. Total flour is 1000 g.
  • 2. Total water is 700 g.
  • 3. 700 / 1000 x 100 = 70%.

Result and meaning

Hydration is 70%, a common moderate bread range.

Learning guide

Understand the calculation

Concepts

  • Baker's percentages are based on total flour.
  • Preferment flour and water must be counted separately.
  • Higher hydration usually means a looser dough.

Tips

  • Weigh ingredients for best accuracy.
  • Account for water already inside preferments.
  • Adjust technique and flour choice, not only the percentage.

Common mistakes

  • Counting total preferment weight as water.
  • Ignoring flour inside a starter or poolish.
  • Assuming hydration alone predicts dough handling.

Educational notes

  • The calculator treats flour and water separately. Preferment flour is added to total flour, preferment water is added to total water, and hydration is total water divided by total flour.
  • They follow the shown formula or rule, but local conventions and input accuracy can change practical use.
  • Yes. Use the built-in sharing and print tools where available.
  • Use it as an estimate and compare it with the formula, assumptions, and examples shown on the page.
  • Real-world inputs can include local rules, changing rates, measurement tolerances, and conditions outside the core formula.

Glossary

Total flour
Main flour plus preferment flour.
Total water
Main water plus preferment water, or target water in target mode.
Hydration
Water as a baker's percentage of total flour.

Related articles

Trust panel

Calculator quality and review

Reviewed by
AZCalculate food and cooking review
Review date
2026-06-25
References
2
Trust score
94/100
Formula verified
Yes
Risk level
low
Category
Food & Cooking
Calculator version
2.1
Formula version
2.1

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Trust note

Clear calculation guidance

This calculator follows the shown formula and is intended for everyday reference, learning, and quick checks.

Low risk contextDifficulty: easyConfidence estimate: 94/100Reviewed 2026-06-25Reviewed by: AZCalculate food and cooking reviewCalculator v2.1 / Formula v2.12 sources listed

Formula and Explanation

Hydration percentage = total water weight / total flour weight x 100

The calculator treats flour and water separately. Preferment flour is added to total flour, preferment water is added to total water, and hydration is total water divided by total flour.

Variable descriptions

F(g)
Total flour: Main flour plus preferment flour.
W(g)
Total water: Main water plus preferment water, or target water in target mode.
H(%)
Hydration: Water as a baker's percentage of total flour.

Formula Notes

  • Do not count total preferment weight as water.
  • Salt and yeast are calculated against total flour.
  • Flour type, protein, fermentation, and handling affect dough feel.

Common uses

  • Adjust bread recipes
  • Compare dough styles
  • Scale bakery batches

Assumptions

What this calculation assumes

  • Weights are entered consistently, using grams in the interactive Stage 3A calculator.
  • Preferment flour and water values are known or estimated.
  • Dough behavior depends on ingredients and technique beyond hydration percentage.

Avoid mistakes

Quick checks before you rely on the result

  • Counting total starter weight as water.
  • Ignoring preferment flour.
  • Comparing dough feel across different flours using hydration alone.

Step-by-Step Explanation

Follow the reasoning, not only the final number.

  1. 1

    Set up the calculation

    Enter main flour and water.

    Starting with clearly defined values and units prevents the most common calculation errors.

  2. 2

    Work through step 2

    Enter preferment flour and water separately if used.

    This step transforms the known values into the form required by the formula.

  3. 3

    Work through step 3

    Choose current hydration or target hydration mode.

    This step transforms the known values into the form required by the formula.

  4. 4

    Work through step 4

    Calculate water divided by flour.

    This step transforms the known values into the form required by the formula.

  5. 5

    Interpret the result

    Review baker's percentages and scaled quantities.

    Compare the result with your real-world goal, such as adjust bread recipes.

Worked example

Bread hydration example

Known values

  • Flour: 1000 g
  • Water: 700 g

Calculation

  1. 1. Total flour is 1000 g.
  2. 2. Total water is 700 g.
  3. 3. 700 / 1000 x 100 = 70%.

Result and meaning

Hydration is 70%.

Calculator guide

About this Dough Hydration Calculator

Calculate dough hydration percentage and water amount from flour. This page includes an interactive calculator, concise formula notes, worked examples, FAQs, related calculators, and practical guidance you can revisit whenever needed.

dough hydrationbreadflour water ratio

References

Sources used for this calculator

Found something that does not look right?

We work hard to keep every calculator accurate and useful. If you notice a calculation error, missing option, or unclear explanation, please let us know so we can review and correct it promptly.

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Calculator usage

Usage information loads after the calculator is ready.

FAQ

Dough Hydration Calculator FAQs

How does the dough hydration calculator work?+

It uses Hydration = water / flour x 100 and calculates the result from the values you enter.

Can I copy or print the result?+

Yes. AZCalculate calculator pages include copy, share, and print actions.

What is dough hydration?+

Dough hydration is total water divided by total flour, multiplied by 100. It is a baker's percentage.

How do I include a preferment or starter?+

Enter preferment flour and preferment water separately. The calculator adds each to the matching flour or water total.

Why should I not count total preferment weight as water?+

Preferment contains both flour and water. Counting the whole preferment as water overstates hydration.

Can I calculate water for a target hydration?+

Yes. Switch to target hydration mode and the calculator calculates total water needed from total flour.

Does salt percentage use total flour?+

Yes. Salt and yeast are calculated as baker's percentages of total flour.

What hydration is best for pizza dough?+

Many pizza doughs fall roughly in a moderate range, but flour strength, fermentation, shaping, and oven style matter.

Can I scale a recipe?+

Yes. Use the scale factor to see scaled flour and water values based on the calculated totals.

Why does dough feel different at the same hydration?+

Flour type, protein content, whole-grain content, mixing, fermentation, and handling technique all affect dough behavior.

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Dough Hydration Calculator - Bread, Pizza and Baker's Percentages | AZCalculate