Cómo leer datos nutricionales: por 100 g, por servicio y % valor diario

Every food page on FoodFactly starts from the same reference amount: 100 grams of the food (100 ml for some drinks). Using one fixed amount makes foods directly comparable. A serving size, by contrast, differs from product to product and from one country's labeling rules to another.

Per 100 g versus per serving

To get the value for the amount you eat, multiply the per-100 g value by your weight in grams and divide by 100. For example, a food with 12 g of protein per 100 g provides 12 × 150 / 100 = 18 g of protein in a 150 g portion. The serving calculator on each food page does this for you, using the household measures (cups, pieces, slices) that the data source has weighed.

Household measures are specific to a food: one cup of chopped broccoli and one cup of cooked rice weigh very different amounts. FoodFactly only offers a measure such as "1 cup" when the source reports its weight for that particular food.

% Daily Value

The percent Daily Value (%DV) compares an amount with a reference intake. FoodFactly uses the Daily Values the U.S. Food and Drug Administration set for food labels for adults and children aged 4 and over. A value of 20% means that 100 g of the food provides one fifth of that reference amount. Daily Values are general label references, not personal recommendations; individual needs vary.

Missing values

When a source has not measured or reported a nutrient, FoodFactly shows it as not reported. A missing value is not the same as zero, and we never fill gaps with estimates.