Dough hydration calculator

Baker's percentage is the language of bread

Every professional bread recipe is written in baker's percentage. Flour is always 100%. Everything else is expressed as a percentage of the flour weight. A 70% hydration dough means water weighs 70% of what the flour weighs. If you have 500g of flour, you have 350g of water. Salt at 2% = 10g. Yeast at 0.5% = 2.5g. This notation makes scaling trivial (want more dough? Multiply all percentages by the same factor) and communicates intent clearly ("what hydration?" is how bakers compare recipes).

The numbers that matter for bread:

• Bagels: 50-55% hydration (stiff dough)
• Pretzels: 55-60%
• Pan sandwich bread: 60-65%
• Enriched brioche: 60% (butter adds moisture)
• Basic lean loaf: 65-70%
• Pizza dough: 60-70% (varies by style — Neapolitan 65%, NY-style 58-62%)
• Baguette: 70-75%
• Country sourdough: 75-80%
• Ciabatta: 80-85% (very wet)
• Focaccia: 80-90%
• Extreme "Tartine-style" boules: 85-90%

What hydration changes

More water = more steam during baking = more oven spring = more open crumb. Low-hydration bread (60%) is easy to shape and bakes into a tight, even crumb (sandwich loaf). High-hydration bread (80%+) is sticky and hard to shape but produces the dramatic irregular holes of a good ciabatta or sourdough. Most home bakers fail at high hydration because they haven't developed the technique — stretch-and-folds, wet hands, good shaping.

The beginner's hydration ladder

1. Start at 65%. Feels like pizza dough. Shapes easily. Forgives over-kneading.
2. Move to 70%. Slightly tacky. Bench-flour helps. Most "no-knead" recipes live here.
3. Progress to 75%. Requires wet hands, bench scraper, minimal handling. Starts to benefit from bulk fermentation folds.
4. Reach 80%. Proper technique territory. Use a banneton (proofing basket). Mix in a tall container for easier folds.
5. 85%+ is expert mode. Tartine boules, high-hydration ciabatta. You'll need a strong flour (King Arthur Bread Flour 12.7%, or Caputo 00 at 13%) and well-developed gluten.

Why the same hydration gives you different doughs

Flour absorbs water differently:

• Bread flour (12.5% protein) absorbs more water than all-purpose (11%)
• Whole wheat absorbs ~10% more water than white
• Rye absorbs dramatically more (200%+ in traditional rye)
• Older flour (6+ months) may need 3-5% less water
• Humid kitchens (summer) make all doughs wetter-feeling

This is why Tartine Bread's 78% hydration works in Chad Robertson's SF bakery but feels like pudding in your humid Georgia summer kitchen. Adjust down 3-5% in humid conditions.

Calculating total hydration with starter, poolish, or biga

When a recipe uses a pre-ferment (starter, poolish, biga), the water and flour in the pre-ferment count toward the total dough hydration. A 20% poolish at 100% hydration (100g flour, 100g water) adds 100g of flour and 100g of water to your totals.

Example sourdough: 500g flour + 100g starter (50g flour, 50g water) + 350g water + 10g salt. Total flour = 550g. Total water = 400g. Hydration = 400/550 = 72.7%. Writing the same recipe at "72.7% hydration" tells another baker exactly what to expect.

Why your dough might feel wrong at the "right" hydration

Common causes:

• Unweighted ingredients. A cup of flour ranges 100-160g. Volume measurement destroys hydration accuracy.
• Measuring salt in your water weight. Salt weight usually isn't included in hydration calculations.
• Forgetting starter contributes flour + water. See above.
• Flour difference. King Arthur vs. store-brand AP: different protein, different absorption.
• Temperature. Cold doughs feel drier than warm doughs at the same actual hydration.

The autolyse: a free hydration upgrade

Mix flour and water only (no salt, no yeast), let rest 30 minutes to 4 hours. Flour fully hydrates, gluten begins developing without any mechanical effort. A 75% hydration dough after a 4-hour autolyse feels like a 68% dough in the hand — easier to shape, more extensible. Add salt and yeast after autolyse, mix briefly.

The bassinage technique

"Bassinage" is adding water at the end of mixing to reach higher hydration than initial mix could handle. You mix at 70%, develop gluten, then slowly add water to reach 80%. The developed gluten handles the extra water. This is how professionals reach 85%+ hydration without the dough becoming soup.

Measuring dough temperature: the variable nobody talks about

Dough temperature determines fermentation rate more than any other factor. Target: 74-78°F for most breads. Formula for final dough temp: (target ×3) − flour temp − room temp − friction factor (10°F for hand-knead, 20°F for stand mixer) = water temperature to use. If target is 76°F, flour is 70°F, room is 72°F, and you're using a stand mixer: 228 − 70 − 72 − 20 = 66°F water. This is why artisan bakeries temper their water.

Related: sourdough starter feeder, pizza dough baker math, cups to grams, recipe scaler.

The answer to "why is my bread dry at 72% hydration"

Almost always: over-baked. Bread is done at 200-210°F internal. If you bake to "crust is dark," you've gone to 215-220°F and evaporated too much moisture. Use a probe thermometer. Pull at 205°F for a tender crumb at 72% hydration. Second common cause: your scale is wrong. Test it with a known weight (a sealed unopened 1-lb box of butter is 454g). Third: your AP flour is actually bread flour (or vice versa) with different absorption, throwing off real hydration.

Worked example: scaling a 75% hydration boule to 3 loaves

Single loaf formula: 500g flour (100%), 375g water (75%), 100g starter (20%, at 100% hydration), 10g salt (2%). Total: 985g dough.

For 3 loaves: multiply everything by 3. 1500g flour, 1125g water, 300g starter, 30g salt. Total: 2955g dough, yielding 3 × 985g balls for shaping. Starter math: 300g starter at 100% hydration = 150g flour + 150g water. True total flour = 1650g, true total water = 1275g. Final hydration = 1275/1650 = 77.3%. Close to target 75% if you count only added flour/water (which is how most recipes are written).

Worked example: adjusting a recipe from bread flour to AP

Recipe calls for 500g bread flour (12.7% protein) at 75% hydration = 375g water. Substituting AP flour (11% protein): reduce water by 3-4% because AP absorbs less. New water: 363g (72.5% hydration). Dough handles similar to the original at 75% with bread flour. Miss this adjustment and the AP version feels wet and slack.

Worked example: whole wheat sourdough

50% whole wheat + 50% bread flour typical formula: 250g WW + 250g bread flour + 400g water (80% hydration) + 100g starter + 10g salt. Whole wheat absorbs 10% more water than white, so 80% overall hydration feels like 75% when mixed. If you dropped to 100% white flour at 80%, you'd have a much wetter, sloppier dough.

Flour protein content reference (2026)

• King Arthur Bread Flour: 12.7% protein, high absorption
• King Arthur All-Purpose: 11.7%, above-average for AP
• Gold Medal All-Purpose: 10.5%, low AP
• Pillsbury All-Purpose: 10.5%
• King Arthur Pastry: 8.5%, very low
• King Arthur Cake Flour: 7%, lowest
• Caputo "00" Pizzeria: 12.5%, finely milled
• Caputo "00" Chef's (Cuoco): 13%, slightly higher
• Bob's Red Mill Artisan Bread Flour: 12.5%
• Central Milling Artisan Baker's Craft (organic): 11.5%, specialty bread flour with malt
• Whole wheat (King Arthur): 14% but bran offsets much of gluten forming
• Rye flour: 8-12% but proteins don't form gluten network; rye behaves very differently

What 65% vs 72% vs 80% looks like in the final loaf

Same flour, same ferment, same bake — changing only hydration:

• 65%: tight, even crumb. Slices clean. Holds butter well. Good sandwich bread. Shape is crisp (high oven spring).
• 72%: moderately open crumb with irregular small holes. Balanced chew. All-purpose artisan loaf.
• 80%: open crumb with large irregular holes. Chewy/glossy interior. Shape is rounder, softer. Slightly more challenging to shape cleanly.
• 85%: very open, glossy interior resembling ciabatta. Must be shaped wet-handed, scored confidently. Crust is thinner, crust-crumb contrast more dramatic.

Autolyse vs. fermentolyse

Autolyse: flour + water only, rest 30 min - 4 hrs. Gluten forms passively; enzymes break starches to sugars. After autolyse, add salt and yeast. Best for 75%+ hydration doughs that need extra extensibility.

Fermentolyse: flour + water + starter (but no salt), rest similar time. Combines autolyse with starter activation. Popular in modern sourdough. Salt is added after the rest.

Both extend the total dough development window and reduce kneading time. Skip if you're in a rush; use if you want dramatically easier shaping and more extensible dough.

Stretch-and-fold schedule for high-hydration doughs

Standard protocol for 75-80% hydration sourdough:

1. Mix flour, water, starter, salt at time 0.
2. 30 min rest.
3. First stretch-and-fold (wet hands, grab from one side, stretch up, fold over).
4. 30 min rest, second stretch-and-fold.
5. 30 min rest, third stretch-and-fold.
6. 30 min rest, fourth stretch-and-fold.
7. Bulk ferment 2-4 hours total until 50% volume increase.
8. Shape, proof in banneton 4-12 hours (fridge for cold retard).
9. Bake.

Skipping stretches at high hydration = weak dough that spreads when scored.

Bassinage in detail

To reach 85%+ hydration reliably: start at 70%. Mix, autolyse 30 min, develop gluten with 2-3 slap-and-folds. Slowly drizzle in additional water (15% of flour weight = extra 75g per 500g flour) while performing gentle folds. The developed gluten absorbs the extra water smoothly. Total hydration reaches 85%. This is how Chad Robertson and other high-hydration bakers get their extreme wet doughs to behave.

FAQ

Can I just use less water to make my dough easier? Yes — reduce from 75% to 68% and the dough is much easier to handle. You'll lose some of the open crumb. Trade-off.

Why is my dough feeling wetter than the recipe says? Weather (high humidity), different flour (lower absorption), old flour (less water uptake), or inaccurate measurement. Test by checking dough consistency, not the number.

Do I include starter water in hydration calculation? Professionally, yes. But most home recipes list "hydration" only counting added water and flour. Read the recipe context.

What protein percentage for pizza dough? 11.5-12.5% (bread flour or Caputo 00 Pizzeria). Lower protein gives chewier, lighter Neapolitan crust; higher protein gives NY-style pull.

How do I make my bread have more holes? More hydration (up to 80%), more bulk fermentation (longer), gentler shaping (don't degas), higher oven temp (steam + spring).

Why do my high-hydration doughs spread flat after shaping? Under-fermented (weak gluten), over-shaped (degassed), or shaped too loosely. Final shaping should create surface tension — the dough ball should feel taut.

What's the difference between Tartine's 75% and a no-knead 75%? Same hydration, different ferment. Tartine uses active starter and stretches over 4 hours. No-knead uses tiny yeast and waits 18 hours. Both work; flavor and crumb differ.

Can I bake bread at 60% hydration? Yes — that's sandwich bread territory. Very predictable, very easy to shape, tight crumb. Good starting point for beginners.

The full bread-type hydration matrix — 2026 edition

Across the bread literature there's no single authoritative chart. King Arthur Baking Company, Modernist Bread, the Tartine series, and the SFBI (San Francisco Baking Institute) curricula all use slightly different hydration buckets. Here is the synthesized reference matrix most professional bakers default to, with the formula assumptions and the matching crumb you should expect:

Read across each row. The hydration column is the variable the calculator above gives you, but the protein column is what changes whether the dough behaves like the row description. A 75% hydration dough with 10.5% Pillsbury AP flour will not behave like a 75% dough with 12.7% King Arthur Bread Flour — same number, different doughs. This is the single most common reason home bakers get inconsistent results from recipes they're weighing perfectly.

The science layer: starch gelatinization, gluten extensibility, and steam

What hydration is actually doing inside the loaf, in three steps. Step one (mixing): water hydrates flour proteins (glutenin + gliadin) and starch granules. Glutenin gives strength (chewy structure), gliadin gives extensibility (stretchiness). The ratio of available water determines how much these polymers can move and align — higher hydration = more polymer mobility = more extensibility, less strength. Step two (fermentation): yeast and bacteria consume sugars released by amylase enzymes (which only work in the presence of water — dry doughs don't ferment well). Higher hydration accelerates enzymatic activity, which accelerates fermentation, which is why high-hydration doughs over-ferment faster than low-hydration ones at the same temperature. Step three (baking): water in the dough flashes to steam at 212°F internal, expanding the loaf (this is “oven spring”) and gelatinizing the starch granules. More hydration = more steam = more spring = more open crumb. This is also why scoring matters more at high hydration — the loaf wants to expand violently and needs a deliberate weakness in the crust to expand through instead of cracking randomly.

The peer-reviewed cereal-science literature (Cereal Chemistry, J. Cereal Science) consistently finds that hydration above ~72% changes the rheology of dough non-linearly — small increases produce disproportionately large changes in extensibility and stickiness. That's why moving from 75% to 80% feels harder than moving from 65% to 70%, even though both are 5-point jumps. Plan for the non-linearity.

Hydration adjustments by flour brand — a 2026 reference

Identical recipes give different doughs across flour brands because absorption varies with protein content, milling fineness, and the presence of malted barley flour. Use the table below to adjust water by ±2–4% from a recipe’s stated hydration when substituting flour:

For the most up-to-date specs, pull the actual flour spec sheet from the miller. King Arthur publishes protein percentages and absorption notes for every flour they mill; Central Milling and Bob's Red Mill do the same. The FDA flour standards at fda.gov set the minimum enrichment and labeling requirements but do not standardize protein content — that's entirely up to the miller, and explains the spread.

Troubleshooting at high hydration — the 8 most common failures

1. Dough spreads flat after shaping. Under-fermented, weak gluten, or over-shaped (degassed). Fix: longer bulk ferment, more stretch-and-folds, gentler final shape. Look for at least 50% volume increase in bulk before shaping.
2. Dough sticks to everything, even wet hands. Either hydration is genuinely too high for the flour's protein content, or autolyse was skipped. Fix: 30–60 minute autolyse before adding salt and starter. The flour fully hydrates and stops feeling sticky.
3. Tight crumb at 78% hydration. Almost always under-fermented. Hydration alone doesn't create open crumb — it's the combination of hydration + adequate bulk fermentation + gentle shaping. Add 30–60 minutes to bulk.
4. Gummy interior at 80%. Under-baked. Pull at 205–210°F internal probe temp, not by crust color. Also: cooling on a rack for at least 60 minutes before slicing — bread is still cooking internally for 30 min after the oven.
5. Pancake-flat ciabatta. Not enough strength developed before bench rest. Slap-and-fold for 5–7 minutes minimum after autolyse, or use 4 stretch-and-folds at 30-min intervals before shaping.
6. Dough doubles in bulk but the loaf still doesn't spring. Almost always over-proofed at final proof, not bulk. Cold retard overnight in the fridge and bake straight from cold — easier to score and better spring.
7. Sourdough at 80% won't hold shape but the same recipe at 75% does. Your particular flour is at its absorption ceiling. Drop 3% hydration permanently for that flour brand or switch to a higher-protein flour.
8. The same recipe behaves differently in summer vs. winter. Real, not imagined. Flour gains 2–4% moisture from humid summer air, which acts like 2–4% more hydration. Reduce water by 2–3% in humid months, especially in unconditioned kitchens.

Bakers' percentage worked examples for three real recipes

Example 1 — A 75% hydration country sourdough for one large boule (about 900g final dough). 500g bread flour (100%) + 375g water (75%) + 100g 100%-hydration starter (20% “baker’s yeast inoculation”) + 10g salt (2%) = 985g pre-bake. Real total flour 550g, real total water 425g, real hydration 77.3%. Mix, autolyse 45 min (no salt or starter yet — flour and water only), add starter and salt, slap-and-fold 5 min, bulk 4 hours at 76°F with stretch-and-folds at 30, 60, 90, 120 minutes. Shape, cold retard overnight (10–16 hours fridge). Bake 500°F covered Dutch oven 20 min, then 450°F uncovered 22 min to 207°F internal. Cool 90 min.

Example 2 — Neapolitan pizza dough at 65% hydration, 24-hour cold ferment. 1000g Caputo 00 Pizzeria (100%) + 650g water (65%) + 20g sea salt (2%) + 0.3g instant dry yeast (0.03%). Mix slowly, develop gluten 6–8 min, bulk 1 hour room temp, divide into 250g balls, cold ferment 24–48 hours. Yield: 6 × 12-inch pizzas. The very low yeast (0.03%) combined with the long cold ferment is what gives Neapolitan dough its complex flavor without sourness.

Example 3 — High-hydration ciabatta at 83% using bassinage. 500g bread flour (100%) + 350g water (70% initial) + 10g salt + 5g instant yeast. Mix, develop gluten 4 minutes, then drizzle in additional 65g water over 3 minutes while folding (bassinage). Final hydration 83%. Bulk 90 minutes with folds at 30 and 60 min. Pour onto floured couche, divide and shape with bench scraper (do not handle by hand — too wet). Proof 45 min, bake 475°F with steam for 12 min, then 450°F dry for 10 min.

FAQ — the expert questions home bakers ask after they’ve mastered 70%

What's the relationship between hydration and total fermentation time?

Inverse with everything else equal. A 75% dough at 76°F bulks in roughly 4 hours; a 60% dough at the same temp can take 6–8 hours. More water = faster enzymatic activity = faster fermentation. The sweet spot for flavor development without over-fermentation is hitting 50% volume increase between hours 3 and 5 in bulk.

Does inclusion of seeds or grains change the hydration calculation?

Yes. Soaked grains (cracked wheat, oats, rye berries) added at 10% by flour weight need their soak water counted in total hydration. A recipe with 500g flour, 350g water, 50g rye berries soaked overnight in 50g water needs to be calculated as 400g water / 500g flour = 80%, not 70%. Most recipes get this wrong.

What hydration for an Emile Henry / cast iron Dutch oven vs. open hearth?

Covered Dutch oven traps steam, so you can go 2–3% lower on hydration and still get the same crumb because trapped steam gives the same spring as more water would. Open-hearth or convection bake at the same hydration produces a tighter crumb because steam escapes.

Can I make ciabatta with all-purpose flour?

Yes, but reduce hydration from 83% to 78% and expect a slightly less open crumb. AP flour at 10.5% protein cannot hold a true 83% hydration matrix — the gluten network fails.

How long can I extend cold retard for high-hydration sourdoughs?

Up to 72 hours at 38°F fridge temp. Past 72 hours, the dough develops acetic acid sharpness and starts to weaken structurally. The sweet spot for flavor + structure is 16–36 hours cold.

What's the “crumb shot” chasing community getting wrong?

Treating crumb openness as the only quality metric. A super-open Tartine-style crumb at 80%+ is genuinely harder to butter, slice, and eat as a sandwich. For everyday bread, a 72–75% hydration loaf with moderately open crumb is more practical. Save the 80%+ extreme bakes for specific projects.

How do I track variation across bakes to figure out what's actually changing?

Keep a baking log with date, flour brand and lot number, room temperature, dough temperature, bulk time, final proof time, and crumb result. Reviewing 6–10 bakes in a log reveals patterns that no single bake can. The Digital Dashboard Hub baker's log template is designed for exactly this — it lets you track recipe ratios across multiple bakes and visualize how hydration, flour, and fermentation interact over time. Free 7-day trial at digitaldashboardhub.com.

Related calculators on this site

Pair this hydration calculator with the sourdough starter feeder when you're scaling a starter to match your dough’s inoculation percentage, the pizza dough baker math tool when you’re sizing dough balls for Neapolitan or NY-style pies, the cups to grams converter when you’re translating an American volume-based recipe into baker's percentages, and the recipe scaler when you need to multiply a single-loaf recipe into 4 or 6 loaves for a bake-sale or holiday batch.