Calculators
Planning tools for everyday cooking & kitchen skills, with visible assumptions and units.
Estimate the total hands-on cooking time for a meal by adding preparation, cooking, and resting time, then applying a chosen overlap allowance. This simple planning estimate does not create a timed kitchen schedule.
Convert a measured cooking quantity between common volume units using fixed US customary kitchen equivalents. Choose a source unit, enter its amount, and select a target unit.
Estimate a planning quantity of main-course servings by adjusting guest count for the share of guests having the dish and the servings planned per person. This is a worksheet estimate; round up to whole servings when purchasing or preparing food.
Estimate a rectangular food container’s internal volume from its inside length, width, and height. The result is in liters and assumes straight-sided dimensions.
Estimate the purchase cost of food discarded over a chosen period using your average food spending, waste share, and period length. This is a simple estimate based on the figures you provide.
Estimate a grocery budget from the number of people, weekly shopping trips, and average cost per trip. This simple worksheet multiplies the household size by the planned trips and cost per person per trip.
Compare the estimated cost per serving of a homemade meal with a ready meal using ingredient costs, servings, and the ready meal price. The homemade estimate includes only the ingredient costs you enter.
Estimate the ingredient cost for one serving by adding the costs of the recipe ingredients and dividing by the number of servings. Enter ingredient amounts using their purchase-unit costs, and keep all costs in the same currency.
Estimate an appliance's electricity cost over a chosen period from its rated power, daily operating time, days used, and electricity price. The estimate assumes the appliance draws its stated power for the full operating time.
Estimate how much of one ingredient to buy for a planned meal by scaling its per-serving quantity to your servings and adding an optional buffer for trimming or cooking loss. The result uses the same unit as your ingredient quantity.
Estimate the total portions to prepare from the number of people, meals per person, and days of meal prep. Add a buffer percentage for extra servings. This worksheet assumes each planned meal is one portion and applies the same buffer to the full batch.
Convert an oven temperature from Fahrenheit to Celsius using the standard temperature conversion formula. Enter the Fahrenheit setting to see the equivalent Celsius temperature.
Convert a pan's measured interior dimensions into an estimated cooking surface area in square inches or square centimeters. This calculator assumes a circular pan and uses its inside diameter.
Estimate the total value of pantry items by multiplying the number of items by their average value per item. This simple estimate assumes one average value applies to every counted item.
Estimate the amount of dry pasta to prepare by multiplying the number of people by the selected serving size. This planning estimate does not account for appetite, side dishes, or pasta shape.
Scale ingredient quantities proportionally by entering the original recipe yield and the number of servings you want to make.
Estimate the minimum rice cooker capacity in liters from the number of servings and the dry rice amount per serving. This simple planning estimate assumes cooked rice occupies about three times the dry rice volume and does not include extra headroom for cooking or other ingredients.
Estimate how many cups of water to use for a measured amount of rice with a selected stovetop water-to-rice ratio. The estimate assumes the selected ratio fits your rice and cooking method.
Estimate the finished soup volume from ingredient volumes, accounting for an assumed reduction during simmering. Enter the measured ingredient volumes and expected reduction percentage.
Calculate the price per one unit of package quantity. Enter the package price and the package quantity in the same unit you want the result reported in, such as ounces, grams, or individual items. This calculator divides the full package price by its quantity; it does not convert units or account for taxes, discounts, or fees.