Use Packaged Food Nutrition Calculator to analyze the nutritional labels of packaged foods and drinks to make informed dietary choices.
Nutrition Label Calculator
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| Nutrient | Per Serving | Per 100 g |
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Estimated energy from macronutrients uses approximately 4 kcal/g for protein, 4 kcal/g for carbohydrate and 9 kcal/g for fat.
Nutrition labels may use jurisdiction-specific rules, rounding methods and energy calculations. Use the values printed on the product label for official nutrition information.
What Is a Nutrition Label Calculator?
A nutrition label calculator converts nutrition values between serving size and a standard quantity such as 100 g or 100 mL. It can be used to compare calories, protein, carbohydrates, fat and other nutrients across different serving sizes.
How to Calculate Nutrition per Serving
Enter the nutrition values shown on the food label and select whether they are given per serving, per 100 g or per 100 mL. The calculator converts the values to the entered serving size and also provides the equivalent values per 100 g or 100 mL.
Nutrition Values and Macronutrients
The calculator reports energy, protein, carbohydrates and total fat, with optional values for total sugars, saturated fat, dietary fibre and sodium. It also estimates the proportion of energy supplied by protein, carbohydrates and fat.
Nutrition Label Calculator FAQs
What does a nutrition label calculator do?
It converts nutrition information between different serving sizes and standard quantities such as 100 g or 100 mL.
How do I calculate calories per serving?
If the label provides calories per 100 g or 100 mL, multiply the value by the serving size divided by 100. If calories are already given per serving, the serving value can be used directly.
How do I calculate nutrition per 100 g?
If nutrition values are provided for a serving, divide each value by the serving size in grams and multiply by 100. The same approach can be used for liquid products using a 100 mL basis.
How are calories from protein, carbohydrates and fat estimated?
The calculator uses approximately 4 kcal per gram for protein, 4 kcal per gram for carbohydrates and 9 kcal per gram for fat to estimate the energy contribution from these macronutrients.
Can this calculator be used for nutrition label comparison?
Yes. Converting products to the same basis, such as per 100 g or per 100 mL, makes their reported nutrient values easier to compare.