Recipe Cost & Nutrition Calculator

Introduction

Recipe costing is just unit math: multiply each ingredient's unit price by the amount used, then add the rows. Nutrition estimates work the same way when calories and protein use the same unit as the quantity. This calculator brings those calculations together so you can estimate batch totals, per-serving values, and which ingredient contributes the most cost or energy.

The tool is input-driven. It does not include a food database and it does not decide what you should eat. Use package labels, store unit prices, kitchen scale conversions, or a trusted nutrition source for your own values, then treat the result as a practical planning estimate.

How to use this calculator

Choose a unit for each ingredient row, such as one egg, 100 g, 1 cup, 1 tablespoon, or 1 ounce. Enter the unit cost, the quantity used in the recipe, calories per unit, and optional protein grams per unit. The cost and nutrition fields must match the quantity unit. For example, if the cost is per 100 g, the calories and protein should also be per 100 g.

Set the number of servings to divide the batch into portions. Use the currency symbol field if you want a symbol other than dollars in the output. Empty rows are ignored, and rows with a quantity but no cost or nutrition data are not counted.

Formula and method

For each ingredient row, the calculator multiplies quantity by unit cost, calories per unit, and protein per unit. It then sums those row totals:

The same summation is used for calories and protein. Per-serving values divide the batch totals by the number of servings. Cost per 100 calories is total cost divided by total calories, multiplied by 100. Calories per currency unit are total calories divided by total cost.

Example calculation

The default pasta example uses dry pasta, tomato sauce, olive oil, and grated cheese. Pasta is measured in 100 g units, sauce in 100 g units, oil by tablespoon, and cheese by a 30 g portion. Those units can differ across rows, but each row's cost, calories, protein, and quantity must refer to the same row unit.

The default totals are $2.80, 1,355 calories, and 41.0 g of protein for the full recipe. With 3 servings, that is about $0.93, 452 calories, and 13.7 g of protein per serving.

How to interpret the result

Total cost helps compare recipes or estimate grocery spend for a batch. Cost per serving is usually the most useful budget number. Calories and protein per serving are rough nutrition planning numbers, not a medical target. Cost per 100 calories and calories per currency unit can help compare energy value when budget is a major constraint.

The ingredient table shows which row contributes the most cost or calories. That is where substitutions usually matter most. For example, a small amount of oil can contribute a large calorie share, while a premium cheese or meat may dominate cost.

Limitations and assumptions

• No nutrition database. The calculator only uses values you enter.
• Units must match within each row. Convert labels and prices before entering them.
• Cooking yield is manual. Draining, evaporation, trimming, and waste are not modeled unless you adjust quantities yourself.
• Nutrition is approximate. Brand, ripeness, preparation, and label rounding can change calories and protein.
• Costs are local. Prices, taxes, coupons, bulk discounts, and currency conversion are not inferred.
• Not medical advice. Use professional guidance for therapeutic diets, allergies, pregnancy, eating disorders, sports nutrition, or chronic conditions.

FAQ

Does this calculator include a food nutrition database?

No. It uses the prices, calories, and protein values you enter. Use food labels, store unit prices, or a trusted nutrition database for your own inputs.

Why do units need to match?

Each row multiplies unit cost, calories per unit, and protein per unit by the same quantity. If cost is per 100 g but calories are per cup, the result will be wrong unless you convert one of them.

Is this medical nutrition advice?

No. It is a meal planning and budgeting estimate. People with medical, allergy, pregnancy, athletic, or therapeutic diet needs should use qualified professional guidance.