Dough Hydration Calculator
Computes hydration % = water grams ÷ flour grams × 100 and total dough weight.
Limitation: Educational kitchen conversion only.
How to Calculate Hydration
Weigh flour and water separately in grams. Other liquids are often counted in advanced formulas but this tool models water only.
Weigh flour in grams.
Weigh when it matters
Volume-to-weight charts are averages. For finicky baking, weigh on a kitchen scale.
What Hydration Percent Means
Hydration describes water relative to flour, not total dough moisture from fats or eggs.
Worked Examples
500 g flour, 350 g water
Inputs
Result
350 ÷ 500 × 100 = 70%.
1000 g flour, 720 g water
Inputs
Result
720 ÷ 1000 × 100 = 72%.
Check your cup style
US customary cups differ from metric cups (250 mL). This cluster uses the US legal cup.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorHydration Formula
Standard baker's percentage definition using flour as 100%.
Formula
Scientific Background
Assumptions follow published kitchen references cited in sources. Results are rounded for display.
Sources & review
Dough Hydration Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
July 22, 2026
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