Cooking calculators
10 free tools
Handy kitchen math for when a recipe doesn't match your pan, your oven, or the number of people at the table. Scale ingredients, swap oven temperatures, and time a roast without guessing.
Turn a conventional oven temp and time into air fryer settings, roughly 25F lower and 20% less time.
Work in baker's percentages with flour as 100%, converting between percentages and gram weights either way.
Convert butter between US sticks, tablespoons, cups, grams, and ounces in one step.
Pick a coffee-to-water ratio like 1:16 and a cup size to get the grams of coffee and water to weigh out.
Multiply meat weight by minutes per pound for total roast time and the clock time it will be done.
See how many of your eggs match the large eggs a recipe calls for, based on volume.
Convert grams to cups for common baking ingredients, using the right density for each one.
Convert oven temperatures between Fahrenheit, Celsius, and UK gas marks, with the nearest gas mark shown.
Enter original and desired servings to rescale a whole ingredient list, or a single amount, by the right ratio.
Convert between active dry, instant/rapid-rise, and fresh cake yeast using standard baker ratios.
Frequently asked questions
Do these tools work in metric or imperial?
Both, mostly. The recipe scaler keeps whatever units you type, oven temps convert between °F, °C, and gas marks, and the roast timer works in pounds with minutes per pound.
How accurate are the air fryer conversions?
They're a solid starting point — about 25 °F lower and 20% less time than a conventional oven. Every air fryer runs a little differently, so check your food a few minutes early the first time.
What's a baker's percentage?
It's a way of writing recipes where flour is always 100% and everything else is a percentage of the flour weight. A 65% hydration dough, for example, uses 650 g of water per 1000 g of flour.