Calculate the hydration percentage of your bread dough to get consistent results every time you bake.
This tool helps home bakers adjust flour and water ratios for different bread styles.
Perfect for tweaking recipes to match your preferred crumb and crust texture.
Bread Hydration Calculator
Base Ingredients
Sourdough Starter (Optional)
100% means equal parts flour and water in starter
How to Use This Tool
Enter the weight of flour and water you plan to use, excluding any sourdough starter. Select the correct unit for each ingredient using the dropdown menus.
If you are using sourdough starter, enter its weight, unit, and hydration percentage (100% is standard for equal parts flour and water). Leave starter fields blank if using commercial yeast.
Click Calculate Hydration to see your total flour, total water, hydration percentage, and expected dough texture. Use Reset Form to clear all inputs.
Formula and Logic
Bread hydration is calculated as the ratio of total water to total flour in the dough, expressed as a percentage.
Total Flour = (Flour weight excluding starter) + (Starter flour content, if applicable)
Total Water = (Water weight excluding starter) + (Starter water content, if applicable)
Hydration % = (Total Water / Total Flour) * 100
For sourdough starter, the flour and water content is split based on the starter's hydration percentage. A 100% hydration starter is 50% flour and 50% water by weight.
Practical Notes
Most home bread recipes use hydration between 60% and 80%. Adjust ratios based on your preferred crust and crumb texture.
Common unit conversions: 1 pound = 16 ounces = 453.6 grams. Use the unit dropdowns to avoid manual conversion errors.
High hydration doughs (over 75%) are stickier and require folding techniques instead of traditional kneading. Low hydration doughs (under 65%) are easier to handle for beginners.
Altitude and humidity can affect dough consistency: reduce water by 1-2% in very humid environments.
Why This Tool Is Useful
Consistent hydration is the key to predictable bread results. This tool eliminates manual calculation errors, especially when scaling recipes up or down.
It accounts for sourdough starter, a common pain point for home bakers who often forget to include starter flour and water in hydration calculations.
Clear texture descriptions help you adjust recipes to match your skill level and equipment, whether you use a stand mixer or knead by hand.
Frequently Asked Questions
Does starter hydration affect the final bread hydration?
Yes, sourdough starter contains both flour and water. The tool automatically calculates and adds the starter's flour and water contributions to the total counts, so your hydration percentage is always accurate.
What hydration is best for beginner bread bakers?
Aim for 65-70% hydration. These doughs are easy to handle, hold their shape well, and produce reliable sandwich-style loaves with minimal specialized technique.
Can I use this tool for gluten-free bread?
Yes, the hydration formula applies to all bread types. Note that gluten-free flours absorb water differently, so you may need to adjust the final hydration by 5-10% based on the specific flour blend you use.
Additional Guidance
Always weigh ingredients instead of using volume measurements (cups, tablespoons) for the most accurate hydration calculations. Volume measurements can vary by up to 20% depending on how packed the flour is.
Test small batches when adjusting hydration for a new recipe. A 2-3% change in hydration can significantly alter the final dough texture.
Store leftover starter in the fridge and let it come to room temperature before measuring its weight for calculations.