Free kitchen calculators for the jobs that really are just arithmetic: brine strength, starter feeds, dough by baker’s percentage and how much food to buy for a crowd. Put your numbers in and they do the maths. If you want the recipe itself to change shape around what you have, that is what the recipe builders are for.
Calculators
Pizza Dough Calculator
Flour, water, salt, yeast and oil for any number of pizzas, with style presets and a fermentation schedule.Open the calculator →Sourdough Calculator
Feed your starter by ratio and nail your dough hydration with baker’s percentages. Two modes in one tool.Open the calculator →Fermentation Brine Calculator
Work out the exact salt for any fermentation brine, in grams and spoons. Presets for pickles, sauerkraut, kimchi and kvass.Open the calculator →How Much Food Do I Need?
Cooking for a crowd. Meat, potatoes, rice and veg for any mix of adults, teenagers, children and toddlers, counted by age rather than by head.Open the calculator →Meal Planning
Build a full week of cooking from my own recipes, drag dishes onto the days you want them, and get one combined shopping list at the end.
Looking for the Recipe Builders?
A calculator answers a question about numbers. A builder writes a whole recipe round your answers, rescaling every quantity and rewriting the method to match, with each choice explaining what it changes. There are five so far, for bigos, Japanese curry, beef bourguignon, salad and Thai curry paste, and they live on the recipe builders page.