What is Baker's Math?
Baker's Math
Baker's math is a system where every ingredient in a recipe is expressed as a percentage of the flour weight, which always equals 100%. It lets you scale any recipe up or down while keeping the same texture, crumb, and rise — and it's the only way to price a batch accurately when you're doubling a formula at 11 PM on a Friday.
Formula
Baker's Percentage = (Ingredient Weight ÷ Flour Weight) × 100. Example: If your chocolate cake uses 300g flour and 180g water, the water percentage is (180 ÷ 300) × 100 = 60%. If you scale up to 600g flour, you need (600 × 60) ÷ 100 = 360g water. The ratio stays locked. Scaling down to 150g flour? You need (150 × 60) ÷ 100 = 90g water.Example
You're pricing a 3-tier wedding cake. Your vanilla cake recipe (which you've baked 200 times) uses: 500g cake flour ($0.08/100g = $4.00), 350g whole eggs ($0.12/g = $42.00), 250g unsalted butter ($0.018/g = $4.50), 200g granulated sugar ($0.004/g = $0.80), 100g sour cream ($0.008/g = $0.80), 10g vanilla extract ($0.15/g = $1.50), 8g baking powder ($0.02/g = $0.16), 5g salt ($0.006/g = $0.03). Total ingredient cost: $53.79 for one batch. Using baker's math: flour = 100%, eggs = 70%, butter = 50%, sugar = 40%, sour cream = 20%, vanilla = 2%, baking powder = 1.6%, salt = 1%. Now a client calls and wants two tiers instead of three. Scale the formula by 0.65 (two-thirds of a three-tier cake). New flour weight: 500g × 0.65 = 325g. New egg weight: 350g × 0.65 = 227.5g. New butter: 250g × 0.65 = 162.5g. New cost: $53.79 × 0.65 = $34.96. You quote $89.95 (ingredient cost × 2.57 markup for labor, overhead, and profit). Without baker's math, you'd either overcharge and lose the job or undercharge and work for $8/hour. With it, you price in under 90 seconds and you know your margin is safe.
Understanding Baker's Math
Most home cooks measure by volume (cups, tablespoons). You measure by weight. Baker's math speaks your language. Instead of saying "2 cups flour and 1 cup water," you say "flour is 100%, water is 60%." This matters because a cup of flour weighs different amounts depending on humidity, how you scoop it, and what altitude you're at. Weight doesn't lie. If your sourdough formula calls for 500g flour, 300g water, 10g salt, and 20g starter, you're working with baker's percentages of 100% flour, 60% water, 2% salt, and 4% starter. Now scale it: need to bake for 50 people instead of 12? Multiply everything by 4.17. Your flour becomes 2,085g. Your water becomes 1,251g. The hydration ratio stays exactly 60%, so your dough handles the same way it always does. No guessing. No failed batches.
How BakeOnyx Helps
BakeOnyx calculates baker's percentages automatically when you enter a recipe by weight. Change your flour weight from 500g to 1000g and every other ingredient scales proportionally — no manual math. When you adjust supplier prices (butter goes up $0.02/g), BakeOnyx recalculates the cost of every recipe using that ingredient in real time. You see your new margin on that wedding cake before you quote it to the customer.
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Join hundreds of baking businesses using BakeOnyx to manage orders, recipes, inventory, and more. Start your free trial today — no credit card required.
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Ready to Transform Your Bakery?
Join hundreds of baking businesses using BakeOnyx to manage orders, recipes, inventory, and more. Start your free trial today — no credit card required.
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