Cooking Calculators: Recipes, Portions and Kitchen Conversions

This collection of cooking calculators helps you handle everyday kitchen math with confidence. Whether you need to scale a recipe up for guests or down for a quiet dinner, convert cups to grams or ounces, or work out how long to cook a joint of meat, these tools give you quick, reliable answers.

They are made for home cooks, bakers, students learning kitchen basics, and anyone planning meals on a budget. Expect tools such as a recipe scaler, ingredient substitution helper, portion and serving calculators, and cooking time and temperature converters.

Scale recipes to any number of servings
Convert between metric and US kitchen units
Estimate cooking times, portions and food quantities

Rice to Water Ratio

Enter your rice type, the amount of dry rice and your cooking method to get the exact amount of water to add and the cooked rice yield, in cups, ml, fl oz or liters.

Brine Salt

Calculate how much salt to add to water for any brine strength. Enter your water amount and target salt percentage, and get the salt weight in grams, ounces, and spoon measures.

Cooking Yield

Estimate how much your food will weigh after cooking. Enter a raw weight and either an expected yield percentage or a measured cooked weight, and get the cooked weight, yield, and raw amount to buy for any target.

Egg Boiling Time

Find the perfect boiling time for a soft, medium or hard yolk. Enter your egg size, starting temperature and preferred firmness, and get the time in minutes plus a cooling tip.

Meat Cooking Time

Estimate a cooking-time range and when to start checking the temperature of a roast, shoulder cut, or whole chicken. Enter the meat type, cut, weight, unit, and cooking method.

Cocktail ABV

Enter the volume and ABV of each ingredient in your mixed drink, plus an estimate of ice meltwater, to find the final alcohol content (ABV) of your cocktail.

Sourdough Starter Feeding

Work out exactly how much starter, flour and water to use at each feed. Enter the total starter weight you want and your feeding ratio to get a precise feeding plan.

Baker’s Percentage

Convert any bread recipe into baker's percentages, or scale a formula from percentages to real ingredient weights. Enter the flour weight and your ingredients to get the full dough formula.

Baking Pan Size

Convert any recipe to a different baking pan. Enter the original and replacement pan shapes, dimensions and batter depth to get a scaling factor for every ingredient.

Recipe Cost

Work out what a homemade recipe really costs. Enter the amount of each ingredient you use, the package size and price you paid, and get the total recipe cost, the cost per serving, and a breakdown by ingredient.

Cake Frosting

Estimate how much frosting you need for a round, square, or rectangular layer cake. Enter the cake's size, number of layers, and frosting thickness to get the volume in ml, cups, and grams.

Coffee Brewing Ratio

Work out exactly how much ground coffee and water you need for any brew. Pick your method (or a custom ratio), enter the amount you know, and get a full recipe with servings.

Ingredient Substitution

Find amounts for supported buttermilk, butter, and baking powder swaps. Choose the original ingredient, enter the recipe amount and unit, then select a matching substitute.

Air Fryer Conversion

Convert any oven recipe to air fryer settings instantly. Enter the oven temperature and cooking time, and get the recommended air fryer temperature and shortened cooking time.

Turkey Thawing Time

Estimate how long your turkey needs to thaw in the refrigerator or in cold water, and get the exact date and time to start thawing so it is ready when dinner goes in the oven. Enter the turkey's weight and your planned cooking time.