Calories from Macros Checker
Recalculate Calories from protein, carbohydrate and fat using the FDA methods in 21 CFR 101.9(c)(1)(i), rounded the FDA way, and see whether the Calories on your label are at risk of being under-declared.
All values per serving, as on the Nutrition Facts panel.
The number on your label.
Counts 2 kcal/g in method (C).
Counts 0 kcal/g in method (C).
0.4 kcal/g (FDA guidance, 2020).
Added at 7 kcal/g if present.
The calculated value is 6% above the label, inside the 20% allowance of 21 CFR 101.9(g)(5).
| Method | Calculated | Label value (rounded) |
|---|---|---|
| Method (B): 4, 4, 9 on the panel values | 212 kcal | 210 |
| Method (C): fiber, sugar alcohols and allulose at their own factors | 212 kcal | 210 |
How FDA judges Calories
Several methods are allowed. 21 CFR 101.9(c)(1)(i) permits specific Atwater factors, the general 4, 4, 9 factors, the general factors with non-digestible carbohydrates and sugar alcohols removed, FDA-approved food-specific factors, or bomb calorimetry. This tool models the two general-factor methods most small brands use.
Under-declaring is the risk. A product is misbranded if its analysed Calories are more than 20% above the declared value (21 CFR 101.9(g)(5)). Declaring a little high is not a violation on this rule, though it undersells the product.
Rounding. Below 5 Calories may be shown as 0; up to 50 to the nearest 5; above 50 to the nearest 10 (21 CFR 101.9(c)(1)). If your lab used Atwater-specific factors or calorimetry, its number can differ legitimately from both figures here.