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Calculate baker's percentages for any bread or dough recipe. Enter flour weight and ingredient amounts to instantly get hydration levels, formula ratios, and total dough weight using the standard baker's math system.
Flour = Always 100%
All ingredients measured relative to flour
65-70% = Standard Hydration
Most everyday bread recipes
2% Salt Is Standard
10g salt per 500g flour
This reference table shows baker's percentages for popular bread types. All values are expressed as percentages of total flour weight. Use these as starting points and adjust to your taste, flour, and environment.
| Bread Type | Flour | Water | Salt | Yeast | Other |
|---|---|---|---|---|---|
| Baguette | 100% | 65-68% | 2% | 0.6% | None |
| Sandwich Bread | 100% | 60-63% | 2% | 1.2% | Sugar 5%, Butter 5% |
| Ciabatta | 100% | 78-82% | 2% | 0.8% | Olive oil 3% |
| Focaccia | 100% | 75-80% | 2% | 1% | Olive oil 8-10% |
| Brioche | 100% | 10-15% | 2% | 2% | Butter 50%, Eggs 50%, Sugar 15% |
| Pizza Dough | 100% | 62-66% | 2% | 0.5% | Olive oil 3% |
| Whole Wheat | 100% | 72-78% | 2% | 1% | Honey 3% |
| Sourdough Boule | 100% | 72-78% | 2% | None | Starter 20-25% |
| Challah | 100% | 15% | 1.5% | 1.5% | Eggs 25%, Sugar 12%, Oil 10% |
| Rye Bread | 100% | 68-72% | 2% | 1% | Caraway 1% |
Note: Ranges reflect typical variation. Brioche and challah use eggs and milk as primary liquid instead of water. Sourdough starter percentages refer to the weight of the active starter (typically 100% hydration, meaning equal parts flour and water).
Baker's percentage, also called baker's math or formula percentage, is the standard system professional bakers use to express bread recipes. In this system, the weight of each ingredient is expressed as a percentage of the total flour weight. Flour is always 100%, and every other ingredient is calculated relative to it. This is fundamentally different from regular percentage, where all parts must add up to 100%.
The system originated in professional bakeries where recipes need to be scaled constantly. A neighborhood bakery making 50 loaves uses the same formula as a factory making 5,000, just with different flour weights. Baker's percentage makes this scaling effortless because the ratios never change. If water is 68%, it stays 68% whether you are making one loaf or one hundred.
The most important baker's percentage in bread baking is hydration, which is simply the water percentage. Hydration determines everything about a dough: how it handles, how it ferments, what kind of crumb it produces, and what the crust will be like. A low-hydration dough at 55-60% creates a tight, dense crumb like bagels, while a high-hydration dough at 80%+ produces the large, irregular holes found in ciabatta and artisan sourdough.
Understanding baker's percentage transforms you from someone who follows recipes to someone who understands bread formulas. Once you learn to read percentages, you can look at any bread formula and immediately know what the dough will feel like, how it will behave during shaping, and what the final bread will look like, all without baking a single loaf.
Flour is always 100%. All other ingredients are calculated relative to the flour.
Recipe: 500g bread flour, 340g water, 10g salt, 3g instant yeast
This is a classic French bread formula. The 68% hydration produces a moderately open crumb with a crisp crust.
Recipe: 600g flour, 360g milk, 12g salt, 7g yeast, 48g butter, 36g sugar
The butter and sugar make this an enriched dough. Fat above 5% noticeably softens the crumb and extends shelf life.
Formula: 100% flour, 65% water, 2% salt, 0.5% yeast, 3% olive oil. Each dough ball = 250g.
To find flour weight from a desired total, divide the total dough weight by the sum of all percentages expressed as a decimal.
For quick estimates, think of baker's percentages as “grams per 100g of flour.” If salt is 2%, that means 2 grams per 100 grams of flour, or 10 grams per 500 grams of flour. For water at 65%, think “about two-thirds the weight of the flour.” These mental shortcuts help you sanity-check your calculations and spot errors in formulas.
Hydration is the most critical percentage in bread baking. This table shows how different hydration levels affect dough character and what breads they produce.
| Hydration | Dough Feel | Crumb Structure | Typical Breads |
|---|---|---|---|
| 50-55% | Very stiff, hard to knead | Very tight, dense | Bagels, pretzels |
| 56-60% | Stiff but workable | Tight, fine crumb | Sandwich rolls, buns |
| 61-65% | Standard, easy to handle | Medium, even crumb | Sandwich bread, dinner rolls |
| 66-70% | Slightly tacky | Moderately open | French bread, baguettes |
| 71-75% | Tacky and soft | Open, irregular holes | Country bread, sourdough |
| 76-80% | Wet and sticky | Very open crumb | Ciabatta, focaccia |
| 81-85% | Very wet, hard to shape | Large, irregular holes | High-hydration sourdough |
| 86-100% | Batter-like | Extremely open | Pan breads, some focaccia |
Quick reference for calculating ingredient weights at different flour amounts using common baker's percentages.
| Ingredient @ % | 250g Flour | 500g Flour | 750g Flour | 1000g Flour |
|---|---|---|---|---|
| Water @ 65% | 163g | 325g | 488g | 650g |
| Water @ 70% | 175g | 350g | 525g | 700g |
| Water @ 75% | 188g | 375g | 563g | 750g |
| Salt @ 2% | 5g | 10g | 15g | 20g |
| Yeast @ 0.6% | 1.5g | 3g | 4.5g | 6g |
| Yeast @ 1% | 2.5g | 5g | 7.5g | 10g |
| Sugar @ 5% | 13g | 25g | 38g | 50g |
| Butter @ 8% | 20g | 40g | 60g | 80g |
| Olive oil @ 3% | 8g | 15g | 23g | 30g |
Scale any recipe from a single loaf to a hundred loaves instantly. Just change the flour weight and multiply by each percentage. No more doubling recipes and hoping the ratios still work.
When you bake by percentages rather than cups and tablespoons, you get the same bread every time. Weight-based formulas eliminate the variability of volume measurements, which can differ by 20% or more.
Baker's percentage is the universal language of bread. Share a formula as “68% hydration, 2% salt, 0.5% yeast” and any baker anywhere can reproduce it at any scale. No unit conversion needed.
When bread doesn't turn out right, percentages help diagnose the problem. Dough too slack? Check if hydration is too high. Bland flavor? Salt might be below 1.8%. Percentages make systematic adjustment possible.
Baker's percentage only works with weights. A cup of flour can weigh anywhere from 120g to 160g depending on how you scoop it. Invest in a kitchen scale that reads in grams for accurate and repeatable results every time you bake.
If your recipe uses a poolish, biga, or sourdough starter, remember that these contain flour and water. The flour in your preferment is part of the total flour, and the water is part of the total water. Calculate the overall formula by including all flour and water from every source.
Whole wheat and rye flours absorb significantly more water than white bread flour. When substituting whole grains, increase hydration by 5-10% to compensate. A formula that works at 68% hydration with bread flour may need 75% or more with 100% whole wheat.
In baker's percentage, the numbers do not add up to 100%. A simple bread formula totals about 170%, and enriched doughs can exceed 250%. This is correct because each ingredient is independently compared to flour, not to the total recipe weight.
Ingredients like yeast and salt may seem small at 0.5-2%, but they have outsized effects on the final bread. A difference of just 0.5% in salt or yeast percentage is very noticeable. Use a scale accurate to 0.1g for ingredients under 10 grams.
Record every bake using baker's percentages along with your notes on dough handling, rise time, and results. Over time, this log becomes invaluable for dialing in your perfect formula and understanding how changes in percentages affect your bread.
Baker's percentage is a notation method used in baking where each ingredient's weight is expressed as a percentage of the total flour weight. Flour is always 100%, and every other ingredient is calculated relative to it. For example, if a recipe uses 500g flour and 350g water, the water is 70% in baker's percentage. This system makes it easy to scale recipes and compare formulas regardless of batch size.
Flour is always 100% because it is the foundation ingredient in bread and dough. All other ingredients are measured relative to it. This convention was established because flour is typically the largest ingredient by weight, and setting it as the baseline makes ratios intuitive. Whether you use 200g or 2000g of flour, the percentages for all other ingredients remain the same.
Divide the weight of the ingredient by the weight of the flour, then multiply by 100. The formula is: Baker's Percentage = (Ingredient Weight / Flour Weight) x 100. For example, if you have 500g flour and 10g salt, the salt percentage is (10 / 500) x 100 = 2%. This works for any ingredient in the recipe.
Hydration is the baker's percentage of water (or total liquid) relative to flour. It is calculated as (water weight / flour weight) x 100. A 65% hydration dough has 65g of water for every 100g of flour. Hydration is the single most important percentage in bread baking because it determines dough texture, crumb structure, and crust characteristics.
It depends on the bread type. Sandwich bread typically uses 60-65% hydration for a soft, tight crumb. French bread and baguettes use 65-70%. Ciabatta and focaccia use 75-85% for their characteristic open crumb. Sourdough often ranges 70-80%. Beginners should start around 65% and increase as they gain experience handling wet doughs.
Yes, and they almost always do. The percentages are not meant to sum to 100% like a pie chart. Each percentage is independently calculated relative to flour. A simple bread formula might total 165% (100% flour + 65% water + 2% salt + 1% yeast = 168%), while an enriched dough like brioche could total over 200% when butter, eggs, sugar, and milk are included.
Multiply your desired flour weight by each ingredient's percentage divided by 100. For example, if you want 750g of flour and the formula calls for 68% water, calculate 750 x 0.68 = 510g water. Repeat for each ingredient. This is the main advantage of baker's percentage: any recipe can be scaled to any size while maintaining perfect ratios.
First, weigh every ingredient in grams. Then divide each ingredient weight by the total flour weight and multiply by 100. For a recipe with 400g flour, 260g water, 8g salt, and 4g yeast: water = 260/400 x 100 = 65%, salt = 8/400 x 100 = 2%, yeast = 4/400 x 100 = 1%. The flour is automatically 100%.
When a recipe uses multiple flours (such as bread flour and whole wheat flour), the total of all flours combined equals 100%. For example, a recipe using 400g bread flour and 100g whole wheat flour has a total flour weight of 500g. The bread flour is 80% and whole wheat is 20%. All other ingredients are calculated against the 500g total.
Yes, baker's percentages are the standard in professional bakeries worldwide. They allow bakers to quickly scale production up or down, communicate formulas unambiguously, and troubleshoot problems. A professional baker can look at a formula and immediately understand the dough characteristics just from the percentages, without needing to know the actual batch size.
Preferments like poolish, biga, or sourdough starter contain flour and water that must be accounted for in the overall formula. To calculate the true baker's percentages, add the flour in the preferment to the total flour, and the water in the preferment to the total water. For example, if a poolish contains 100g flour and 100g water, both amounts are included in the overall totals before calculating percentages.
Most bread formulas use 1.8% to 2.2% salt relative to flour weight. The standard is 2%, meaning 10g of salt per 500g of flour. Salt below 1.5% produces bland bread with poor structure, while salt above 2.5% can inhibit yeast activity and taste overly salty. Some regional breads like Tuscan pane sciocco traditionally use no salt at all.
This calculator is for informational and educational purposes only. Results may vary based on flour type, humidity, altitude, and other environmental factors. Always use a kitchen scale for accurate baking.