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Convert nutrition label values per 100 g into calories and macronutrients for your chosen amount.

Method, example and limitations

Each value per 100 g × portion weight / 100. Example: 200 kcal per 100 g becomes 300 kcal for 150 g. Energy is scaled from the label, not recalculated using 4–4–9.

FDA — How to Understand and Use the Nutrition Facts Label ↗

When an estimate is not enough

Results depend on the label and entered weight. Do not combine raw-food values with cooked weight. Liquids require consistent volume units; this form uses grams. The result does not decide how much you should eat.

General information for adults, not a personal diet or prescription. For medical conditions, pregnancy, breastfeeding, eating disorders or specific needs, consult a qualified professional.