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Baker's Percentage Calculator

Convert baker's percentages to ingredient weights, with the flour as the 100% base.

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Baker's Percentage Calculator is free to use as often as you like, directly from this page. You will find it under Cooking & baking, with Air Fryer Converter and Baking Pan Size Converter for the neighbouring cases.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Baker's Percentage Calculator?

Convert baker's percentages to ingredient weights, with the flour as the 100% base.

When would I actually use this?

Cooking from a recipe that does not match your kitchen: scaling for a different number of people, converting cups to grams, and substituting what you do not have.

What is the most common mistake?

Converting a cup as if it were a volume of weight. A cup of flour and a cup of sugar differ by nearly a third in mass, so a single conversion factor gets one of them badly wrong.

Is there a tool for the next step?

Baking Pan Size Converter is the closest one after this: Convert a recipe between baking pans by comparing base areas, get the scale ratio and a batter-depth note, and auto-scale your ingredient list.

What else is worth having open alongside it?

BBQ Calculator and Cheese Board Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Volume-to-weight factors are per ingredient, because density is. Cooking times assume a conventional oven at the stated temperature; fan ovens run hotter and need roughly twenty degrees less.

Further reading

All guides →
ExplainerBaker's Percentage Explained: One Formula, Any Batch SizeFlour is 100 percent and everything else is measured against it. That one convention lets the same recipe scale from a single loaf to a bakery batch without a single new calculation — and yes, the percentages are supposed to add up to more than 100.GuideYeast Conversion Chart: Fresh, Active Dry and Instant, With the Actual FactorsMultiply fresh yeast by 0.4 for active dry and by 0.33 for instant. Those two numbers are the whole chart, they are King Arthur's professional figures, and they are approximate — here is how far, and what else changes when you swap.GuideThe Sourdough Timeline: An Hour-by-Hour Schedule That Fits a Real DayA full schedule from feeding the starter to slicing the loaf, and the one variable that moves every time on it. Five hours of bulk at 75 °F becomes about seven and a quarter at 68 °F.How-toHow to Convert Any Oven Recipe for an Air FryerDrop 25 °F and cut the time by about a fifth — then adjust for what the food is and how full the basket is, because those two change the answer more than the rule does.ExplainerA Cup Is Not a Cup — and That Is Why Your Cake FailedFour different cups are in legal use, and the Australian tablespoon is a third bigger than everyone else's. But the error that actually ruins a bake is smaller than a border: the same cup of flour weighs 120 g or 160 g depending on how you filled it.ExplainerPizza Dough Hydration Explained: What the Percentage MeansUnderstand what hydration percentage means, how water-to-flour ratio shapes your crust, and which level to choose for pan, Neapolitan, or New York style pizza.