Hydration In Bread Dough, From 60% To 90%

Pull a ciabatta apart and hold it up to the light. The irregular holes, the translucent walls between them, the crust that shatters when you bite it: all of that comes from one number. The baker mixed water at around 80% of the flour weight and let time and gas do the rest.

Hydration is the single most discussed variable in bread baking. It determines how the dough feels in your hands, what kind of crumb it can produce, how easy or hard shaping will be, and what the finished crust looks like. Understanding what the numbers mean at each level is the fastest way to start making deliberate choices about the bread you bake, rather than following recipes blindly.

What Hydration Actually Means

Hydration is water weight divided by flour weight, expressed as a percentage. If your formula calls for 500g of bread flour and 375g of water, the hydration is 375 / 500 = 75%.

This is a baker’s percentage, meaning flour is always 100% and every other ingredient is relative to it. The hydration percentage does not change when you scale the batch up or down. A 75% hydration formula stays 75% hydration whether you are making one loaf or ten. The Dough Formula calculator handles the gram weights automatically once you set your hydration target.

One thing to watch: hydration refers specifically to the water in the formula. If you use a sourdough starter, the water inside the starter counts toward total hydration. A 100g starter at 100% hydration contributes 50g of water and 50g of flour. Ignore that and your stated hydration is lower than the real hydration, which affects how the dough behaves during fermentation.

The Practical Range: 60% to 90%

Most bread falls between 60% and 85% hydration. Below 60% you get cracker-like doughs. Above 85% you are usually working with pourable batters. Here is what each level of the range actually produces.

60% to 65% hydration produces a firm, dry dough that holds its shape immediately after you stop handling it. This is the territory of traditional French baguettes (often 65%), many sandwich loaves, and rolls intended for high-volume production. The dough is forgiving and relatively easy for beginners to shape. The crumb will be tight to moderately open. The crust can still be crisp if you steam the oven properly, but you will not get the dramatic open holes that wetter doughs produce.

68% to 72% hydration is where many home bakers spend most of their time. The dough has enough elasticity to be workable without being sticky, it holds folds well, and it develops structure predictably. A 70% hydration country loaf (pain de campagne style) is achievable with hand mixing and produces a satisfying, moderately open crumb. This is a sensible starting range if you are building your shaping skills.

73% to 78% hydration starts to feel noticeably wetter. The dough will be tacky and may spread during shaping if your gluten development is not thorough. Baguettes at 75%, sourdoughs with open crumb goals, and many enriched doughs (where fat content interacts with water absorption) land in this zone. Bench work requires a light touch: minimal flour dusting, gentle handling, and confidence in your pre-shape.

78% to 85% hydration is the territory of open-crumb sourdough and high-hydration focaccia. Shaping is done in the bowl or pan rather than on the bench. Stretch-and-fold replaces traditional kneading because kneading a dough this wet creates a sticky mess. The payoff is an airy, irregular interior and a very thin, shatteringly crisp crust. See the High Hydration Focaccia guide for a style that deliberately lives at the high end of this range.

Above 85% is generally not hand-shaped. Ciabatta dough is often poured into the pan rather than shaped by hand. At these levels, the dough depends on strong, developed gluten to hold enormous quantities of gas, and it is very sensitive to overhandling.

How Flour Protein Changes the Numbers

The same hydration percentage produces very different doughs depending on the flour you use. Bread flour with 12% to 13% protein absorbs water more aggressively than all-purpose flour with 10% to 11% protein. If a recipe was developed with bread flour and you substitute all-purpose, a 75% hydration dough will feel noticeably wetter and harder to handle.

This is not a flaw in the recipe. It is a property of the flour. Protein chains (glutenin and gliadin) absorb water as they form gluten, so higher protein flour can accommodate more water without losing cohesion. When you switch flour types, adjust your hydration down by 3% to 5% and work back up from there until the dough feels right.

Stone-milled flours and heritage wheat varieties can behave unpredictably because the particle size is less uniform than commercial roller-milled flour. They often absorb water more slowly, so the dough feels wet at 15 minutes and correct at 45 minutes. Autolyse (resting the mixed flour and water before adding other ingredients) helps these flours hydrate fully before you assess the dough’s texture.

Whole Grain Flours and Hydration

Whole wheat, rye, spelt, and other whole grain flours absorb more water than white flour because the bran and germ particles soak up significant moisture. A 75% hydration whole wheat dough will often feel drier and stiffer than a 75% hydration white bread dough.

Rye is the most extreme case. Rye flour absorbs water rapidly and does not form the same gluten network as wheat, which means high-rye doughs are almost always handled as pours or are baked in loaf pans. A 70% hydration rye bread may actually feel quite sticky compared to a 70% white bread.

When you increase whole grain content in a formula, it is standard practice to increase hydration by roughly 2% to 4% for every 10% of whole grain substitution, adjusting to feel as you go.

Common Mistakes

Chasing high hydration before the fundamentals are solid. A 78% hydration dough baked with underdeveloped gluten and poor fermentation will produce a flat, dense, gummy loaf. The same baker working a 68% hydration dough with good technique will produce a better loaf every time. High hydration is a tool for specific results, not a marker of skill level.

Comparing hydration percentages across different flour types without adjusting. Seeing that a respected bakery uses 80% hydration and replicating that number with a different flour can give you a completely different dough. The percentage is only meaningful in the context of the specific flour it describes.

Ignoring ambient humidity. On a very humid summer day, flour picks up moisture from the air. Your dough will be slightly wetter than it would be on a dry winter day with the same formula. Professional bakers adjust water amounts seasonally. At home, if your dough feels wetter than usual without any recipe change, humidity is often the reason. Dropping hydration by 1% to 2% in humid weather is a practical fix.

Adding all the water at once without checking texture. For high-hydration formulas, add 90% of the water first and incorporate it fully, then add the remaining water gradually. This gives you a real-time feel for the dough and prevents over-hydration if your flour has lower absorption than expected.

Choosing Your Hydration

Start with the bread style you want. A tight sandwich loaf: 65% to 68%. A general country sourdough: 70% to 74%. An open-crumb artisan loaf: 76% to 80%. Ciabatta or focaccia: 80% and above.

Then calibrate to your flour. Check the protein content on the bag. If you are using a lower-protein all-purpose, start at the lower end of your target range. If you are using a strong bread flour or a high-extraction flour, you can push a little higher.

Once you have a working formula, use the calculator to lock in the percentages. That way, when you want to make two loaves instead of one, the gram amounts scale automatically and your hydration stays exactly where you set it.