Bread / Baker's Percentage Calculator

Start by making total flour 100 percent. Then write every other ingredient as a percentage of flour weight. For example, flour 100 percent, water 70 percent, salt 2 percent, and instant yeast 1 percent. If you use 1,000 grams flour, that means 700 grams water, 20 grams salt, and 10 grams yeast. This format lets any baker scale and understand your dough quickly.

Hydration is the water weight divided by flour weight, shown as a percentage. Total water means all water in the dough, including water in milk, eggs, starter, preferment, or soaked grains when you are calculating precisely. Oil is not counted as water. For simple dough, hydration may just be water divided by flour. For sourdough or enriched bread, count hidden water for better accuracy.

The formula is: ingredient percentage = ingredient weight divided by total flour weight, multiplied by 100. Flour is always 100 percent, even if you use several flours. For example, 700 grams water with 1,000 grams flour gives 70 percent hydration. Salt at 20 grams with 1,000 grams flour is 2 percent. This system makes bread formulas easy to scale, compare, and troubleshoot.

Add all baker's percentages to get total formula percent. Then divide the desired dough weight by that total as a decimal. For example, flour 100 percent, water 70 percent, salt 2 percent, yeast 1 percent equals 173 percent total, or 1.73. If you want 1,000 grams dough, 1,000 divided by 1.73 equals about 578 grams flour. Then calculate the other ingredients.

Bakers use percentages because they are accurate, scalable, and easy to compare. Cups change with packing, humidity, and ingredient shape, but grams stay clear. Baker's percentage tells you immediately whether dough is stiff, wet, salty, or rich. It also helps a bakery make 1 loaf or 100 loaves from the same formula. This is why professional bread work is based on weight.

First write the recipe in baker's percentages. Then decide your target dough weight or flour weight. If you know flour weight, multiply flour by each percentage. If you know total dough weight, divide it by total formula percent as a decimal to get flour. After that, calculate water, salt, yeast, and extras. Keep notes on temperature and fermentation, because time may change with batch size.

Most bread dough uses about 1.8 to 2.2 percent salt based on flour weight. A simple starting point is 2 percent, which means 20 grams salt for 1,000 grams flour. Salt improves flavor, strengthens gluten, and controls yeast activity. Too little salt makes bread bland and weak. Too much salt slows fermentation and can taste sharp. Always weigh salt in bread formulas.

Yeast percentage depends on time and temperature. For instant yeast, a same-day straight dough may use about 1 to 2 percent of flour weight. Long cold fermentation may use only 0.1 to 0.5 percent. Fresh yeast is used at higher weights than instant yeast. More yeast makes dough rise faster but can reduce flavor. Less yeast with more time gives better aroma and texture.