General calculator
Baking Converter (Baker's Percentage)
Calculate ingredient weights for bread, pizza, and pastry using Baker's Percentage. Scale recipes easily by flour weight or desired total dough weight.
| Ingredient | Percentage | Weight (grams) |
|---|---|---|
| Total Dough | 173.5% | 867.5g |
Introduction
In professional baking, recipes aren't written in cups and spoons—they are formulated using Baker's Percentage. This math convention sets the total flour weight to 100% and expresses all other ingredients (water, yeast, salt, sugar) as percentages relative to that flour. Our Baking Converter helps you calculate precise gram weights and effortlessly scale recipes up or down based on your flour quantity or target dough yield.
How to Use
Select your calculation mode: "By Flour Weight" if you know how much flour you want to start with, or "By Total Dough Weight" if you want to make a specific total size of dough. Enter the percentage values for Water, Yeast, Salt, and any Custom ingredient (like sugar or butter). Click Calculate to get the precise weights of each ingredient in grams.
Formula
Ingredient Weight = Flour Weight × (Ingredient Percentage / 100). If scaling by total dough weight: Flour Weight = Total Dough Weight / (Total Percentage / 100), where Total Percentage is the sum of all ingredient percentages (including 100% for the flour itself).
Examples
Example (Flour Mode): Start with 500g Flour, 70% Water, 2% Salt, 1% Yeast. Water = 350g, Salt = 10g, Yeast = 5g (Total Dough = 865g). Example (Dough Mode): Desired Total = 1000g, percentages same as above. Total % = 173%. Flour = 1000 / 1.73 = 578g, Water = 404.6g, Salt = 11.6g, Yeast = 5.8g.
Results Explained
The results display a detailed list of ingredients with their calculated gram weights alongside their respective percentages. This ensures you can measure each ingredient accurately with a digital kitchen scale.
What Is Baker's Percentage (Baker's Math)?
Baker's Percentage is a mathematical notation used by bakers to express the formulas for bread, cakes, pastries, and other baked goods. Unlike standard percentages—where all ingredients add up to a combined total of 100%—Baker's Percentage designates the total weight of flour in the recipe as the absolute reference point of 100%.
Every other ingredient in the formula is calculated and expressed as a ratio relative to that flour weight. For example, if a recipe calls for 1000 grams of flour and 700 grams of water, the hydration (water percentage) is calculated as:
(700g / 1000g) * 100 = 70%
Because flour is always 100%, the sum of all ingredient percentages in a bread recipe will always exceed 100% (typically ranging from 160% to 180% or more depending on the dough's hydration and other enrichments).
Why Volume Measurements Fail in Baking
Many home bakers rely on cups and spoons, which measure volume rather than mass. Volume measurements are notoriously inaccurate in baking due to several physical variables:
- Density of Flour: A cup of flour can weigh anywhere from 120 grams to 160 grams depending on how tightly packed it is, whether it was sifted, or how long it sat in the pantry. This 30%+ variance can completely ruin a dough's hydration.
- Humidity: Flour absorbs moisture from the air. In humid weather, flour packs tighter and holds more moisture, altering volume measurements.
- Scaling Complexity: Doubling or tripling a recipe measured in fractional cups (e.g., 2 and 3/4 cups) is tedious and prone to simple mathematical mistakes.
By shifting to weight measurements (typically in grams) and using Baker's Percentage, baking becomes highly scientific and reproducible. Once you find a formula you like, you can bake it perfectly every time, regardless of variables.
Scaling Dough: Two Math Approaches
Our Baking Converter accommodates two main styling workflows that bakers use when preparing recipes:
1. Scaling from a Known Flour Weight (Flour Mode)
This is useful when you have a specific bag of flour or want to use a round number of flour (like 500g or 1000g). You calculate the weights of other ingredients directly:
Water Weight = Flour Weight * (Water % / 100)
Salt Weight = Flour Weight * (Salt % / 100)
2. Scaling to a Target Total Dough Weight (Dough Mode)
This is the industry standard for commercial bakers. If you have two bread pans that hold 750g of dough each, you need exactly 1500g of total dough. How do you know how much flour to weigh? You sum all percentages to find the Total Percentage Factor:
Total % = 100% (Flour) + Water% + Yeast% + Salt% + Custom%
Flour Weight = Desired Total Weight / (Total % / 100)
Once you have the Flour Weight, you use it to find the other ingredient weights just like in Flour Mode.
Three Worked Recipe Examples using Baker's Math
Example 1: Classic Parisian Baguette (70% Hydration)
A simple lean dough consisting of only four ingredients. Let's calculate for a 1000g total yield:
- Percentages: Flour 100%, Water 70%, Salt 2%, Instant Yeast 1%.
- Total Percentage Sum: 100 + 70 + 2 + 1 = 173%.
- Flour Weight: 1000g / 1.73 = 578.0g
- Water Weight: 578.0g * 0.70 = 404.6g
- Salt Weight: 578.0g * 0.02 = 11.56g
- Instant Yeast: 578.0g * 0.01 = 5.78g
Example 2: Neapolitan Pizza Dough (65% Hydration)
Designed for a slow, cold fermentation. Let's calculate starting with 800g of flour:
- Percentages: Flour 100%, Water 65%, Salt 2.5%, Olive Oil 3%, Dry Yeast 0.3%.
- Flour Weight: 800g
- Water Weight: 800g * 0.65 = 520g
- Salt Weight: 800g * 0.025 = 20g
- Olive Oil: 800g * 0.03 = 24g
- Dry Yeast: 800g * 0.003 = 2.4g
- Total Dough Weight: 800 + 520 + 20 + 24 + 2.4 = 1366.4g (enough for about 5 individual pizzas).
Example 3: Rich Holiday Brioche (Enriched Dough)
A heavily enriched dough containing butter and sugar. Let's calculate for 1200g of dough:
- Percentages: Flour 100%, Milk/Water 50%, Yeast 2%, Salt 2%, Sugar 12%, Butter 30%.
- Total Percentage Sum: 100 + 50 + 2 + 2 + 12 + 30 = 196%.
- Flour Weight: 1200g / 1.96 = 612.2g
- Milk/Water: 612.2g * 0.50 = 306.1g
- Butter Weight: 612.2g * 0.30 = 183.7g
- Sugar Weight: 612.2g * 0.12 = 73.5g
- Yeast & Salt: 612.2g * 0.02 = 12.2g each
Standard Hydration Levels for Different Doughs
Hydration is the ratio of water to flour. It dictates the crumb structure, chewiness, and ease of handling. Here is a general guide:
- 50% - 55% (Low Hydration): Bagels, pretzels, and ramen noodles. Very stiff, holds shape extremely well, requires mechanical kneading or significant effort.
- 60% - 65% (Medium Hydration): Standard sandwich loaves, pizza doughs. Easy to handle, soft interior, moderately tight crumb structure.
- 68% - 75% (High Hydration): French baguettes, sourdough batards. Sticky dough, requires folding techniques instead of traditional kneading. Yields open, airy crumb with large holes.
- 80% - 90% (Very High Hydration): Ciabatta, focaccia. More like a thick batter than a dough. Requires careful handling and scraping, resulting in a very glossy, open crumb structure.
Frequently Asked Questions
What is Baker's Percentage?
Baker's Percentage is a calculation method where the weight of flour is always 100%, and the weights of all other ingredients are calculated as a percentage of that flour weight.
Why does the total percentage exceed 100%?
Because flour is defined as 100% on its own, adding water (e.g., 70%), salt (2%), and yeast (1%) makes the total percentage sum up to 173%.
How do you calculate the weight of water using Baker's Percentage?
Multiply the flour weight by the water percentage and divide by 100. For example, 500g of flour at 70% hydration requires 350g of water.
What is hydration in baking?
Hydration is the ratio of liquid (usually water or milk) to flour, expressed as a percentage. Higher hydration results in wetter, stickier dough and larger air bubbles in the baked bread.
Can I use this calculator for gluten-free baking?
Yes! In gluten-free baking, the sum of all gluten-free flours and starches (like brown rice flour, potato starch, tapioca flour) acts as the 100% flour base.
How do I scale a recipe up or down?
By keeping the percentages the same and changing the starting flour weight or total desired dough weight, the calculator automatically scales all other ingredients proportionally.
Does milk count as hydration?
Yes. However, keep in mind that milk is about 87% water and 13% solids (fats and proteins). Enriched recipes sometimes account for this, but standard baker's math treats milk as 100% hydration liquid.
How much salt is standard in bread dough?
The industry standard for salt in bread dough is between 1.8% and 2.2% of the flour weight. Salt controls yeast fermentation, strengthens gluten, and adds flavor.
What is the standard yeast percentage?
For instant dry yeast, 0.5% to 1.5% is standard. Active dry yeast is used at 1% to 2%, and fresh yeast is used at 2% to 4%.
How do I calculate ingredients if my recipe has multiple flours?
Combine the weights of all flours (e.g., whole wheat, rye, and white flour). The sum of all flours represents the 100% baseline.
Why should I weigh ingredients in grams instead of ounces?
Grams are a smaller unit of measurement, which makes scaling small quantities (like 1.5% yeast or 2% salt) much easier and more accurate than using ounces or pounds.
Can I add custom ingredients to this calculator?
Yes, the calculator features a "Custom Percentage" field where you can input enrichments like sugar, butter, or olive oil.
Does sourdough starter affect Baker's Percentage calculations?
Yes. A sourdough starter contains flour and water (usually in a 1:1 ratio). In precise baker's math, you must subtract the starter's flour and water from the recipe's total flour and water weights.
What is the ideal hydration for pizza dough?
Standard home oven pizza dough usually ranges between 60% and 65% hydration, which makes it easy to stretch without tearing. Professional wood-fired pizza dough is often 62% to 68%.
What is the standard hydration for baguettes?
Traditional French baguettes are typically made with a hydration of 68% to 72%, giving them their classic crispy crust and open crumb.