Baking by the Numbers: Ratios, Hydration and Kitchen Conversions
Why great bakers weigh, not scoop — baker's percentages, dough hydration, ingredient ratios, oven temperatures and how to scale any recipe up or down with confidence.
Dough Hydration Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Hydration
70.0%
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Dough Hydration Calculator
The Dough Hydration Calculator works out your hydration in an instant. Enter flour weight and water weight and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the flour weight.
- Enter the water weight.
- Read off your hydration — the calculator updates automatically, with no button to press.
Formula
The Dough Hydration Calculator uses the formula:
Hydration = Water weight ÷ Flour weight × 100
Worked example
For example, with flour weight of 1,000 g and water weight of 700 g, the hydration is 70.0%.
| Flour weight | 1,000 g |
|---|---|
| Water weight | 700 g |
| Hydration | 70.0% |
|---|
Results are estimates for educational use, not professional advice.
Frequently asked questions
Hydration is the water weight as a percentage of flour weight. 700 g of water to 1000 g of flour is 70% hydration.
Higher hydration gives a more open, airy crumb but stickier, harder-to-handle dough. Lower hydration makes a tighter, easier-to-shape dough.
Around 60–65% suits sandwich loaves, 70–75% suits artisan and sourdough breads, and very high hydration suits ciabatta and focaccia.
Yes. Include milk, eggs and other liquids as part of the water weight if you want a true hydration figure.
The Dough Hydration Calculator uses the formula: Hydration = Water weight ÷ Flour weight × 100. For example, with flour weight of 1,000 g and water weight of 700 g, the hydration is 70.0%.
Enter the flour weight. Enter the water weight. Read off your hydration — the calculator updates automatically, with no button to press.
Related guides
Dough Hydration Table: Hydration by Flour weight
Reference table of hydration for Dough Hydration across a range of flour weight values — exact, engine-computed figures you can read off at a glance.
How to Calculate Dough Hydration: Formula, Steps & Examples
Learn how to calculate Dough Hydration — the formula explained step by step, with worked examples and a free calculator to check your answer.
Ice for a Party Table: Total ice needed by Number of guests
Reference table of total ice needed for Ice for a Party across a range of number of guests values — exact, engine-computed figures you can read off at a glance.