How do I calculate the nutritional profile of a home-cooked recipe?

To calculate recipe nutrition, weigh each raw ingredient in grams using a kitchen scale before cooking. Input the weight and nutritional values (calories, protein, carbs, fat per gram or per 100g) into the calculator. Sum the totals of all ingredients, then divide by the number of servings or portions the recipe makes.

Why should I weigh raw ingredients instead of cooked ones?

Cooking changes the weight of food significantly due to water absorption (like rice or pasta expanding) or water loss (like chicken or vegetables shrinking). However, cooking does not change the calorie or macronutrient content. Weighing ingredients in their raw, uncooked state is the only way to ensure absolute nutritional accuracy.

How do I determine the number of servings in a recipe?

You can define servings based on how you divide the final dish. For example, if you cook a large pot of curry and divide it equally into 4 lunchboxes, the recipe has 4 servings. Alternatively, weigh the final cooked dish in grams, and define a standard serving size (e.g. 200g serving).

How does cooking oil affect the calories of a recipe?

Cooking oil is extremely calorie-dense, containing 9 kcal per gram. Adding just 1 tablespoon (14g) of oil adds approximately 120 kcal of pure fat to your dish. Failing to weigh and log cooking oils, butter, or ghee is one of the most common reasons individuals fail to reach their weight loss goals.

Recipe Nutrition Calculator: Calories and Macros per Serving

Analyze homemade food by adding ingredients, quantities, and servings. The calculator estimates total recipe calories plus per-serving protein, carbs, fat, and calories.

Quick formula for recipe calories per serving

Add calories and macros for every raw ingredient, then divide by servings. For example, a 1,200 kcal recipe split into 4 servings gives 300 kcal per serving. Include oil, ghee, sauces, toppings, and nuts.

Analyze Your Recipe

Add your ingredients and their weights, select the number of portions, and view your complete nutritional profile.

Number of Servings (Portions)

Ingredients (values per gram/unit)

Ingredient Name

Weight (g)

Cal/g

Prot/g

Carb/g

Fat/g

Ingredient Name

Weight (g)

Cal/g

Prot/g

Carb/g

Fat/g

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The Science of Recipe Analysis & Food Chemistry

1. Raw vs. Cooked Yield Factors

In nutritional science, the difference between raw and cooked states is critical. When foods are cooked, they undergo chemical and physical changes. Grains (like rice and oats) absorb water, increasing their weight by 2x to 3x, which dilutes their calorie density per 100g. Proteins (like chicken and fish) lose moisture, shrinking by 20% to 30%, which concentrates their protein and calorie density per 100g. Because water contains zero calories, weighing ingredients raw ensures that water weight fluctuations do not distort your calculations.

2. Retention Factors and Nutrient Heat Sensitivity

While the macronutrient (protein, carbohydrate, fat) and caloric content of food is highly stable during cooking, certain micronutrients are heat-sensitive or water-soluble. Vitamins C and B-complex can dissolve in cooking water or break down under high heat. To account for this, food databases use **retention factors** to adjust micronutrient profiles, though macronutrient calculations remain generally consistent based on raw ingredient sums.

3. The Calorie Density of Cooking Fats

Cooking fats (ghee, butter, coconut oil, mustard oil) represent the most common source of hidden calories in home cooking. Fat contains **9 kilocalories per gram**, more than double the energy density of protein or carbohydrates (4 kcal/g). A single unlogged splash of oil can easily add 150-200 kcal to a dish. Accurately tracking these lipids is the most critical step for achieving a precise calorie deficit or surplus.

Average Raw-to-Cooked Weight Yield Factors

Typical yield multipliers and weight changes for common food groups when cooked:

Food Group	Raw Weight Baseline	Cooked Weight (Avg)	Yield Factor / Interpretation
White / Brown Rice	100 grams	280 - 300 grams	approx. 3.0x (Absorbs water; lower calorie density)
Chicken Breast / Boneless	100 grams	70 - 75 grams	approx. 0.7x (Loses water; higher protein density)
Lentils / Dals (Dry)	100 grams	250 - 270 grams	approx. 2.6x (Absorbs water; expands in volume)
Green Vegetables / Spinach	100 grams	40 - 50 grams	approx. 0.5x (Loses moisture; wilts in pan)

How the Calculation Works

Recipe calculations utilize standardized food science and chemical energy balance equations:

USDA FoodData Central Database: Providing the baseline nutritional weights for raw whole foods and raw agricultural ingredients.
FSSAI Indian Food Composition Tables (IFCT): Standardizing macronutrient and energy densities for regional Indian ingredients.

Formula based on the published equation. Methodology reviewed by the Asterisks editorial team. Last content review: June 2025.

Last Updated: June 2026

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Frequently Asked Questions

Disclaimer: Recipe nutrition calculations are predictive estimations. Natural variations in agricultural ingredients, soil conditions, exact fat content, and moisture loss during cooking can cause actual caloric values to vary by 5-10%. Consult a licensed dietitian for clinical diet planning. Full disclaimer →