Last verified 21 Sept 2026 · generated from 21 CFR 101.9(b) and 101.12(b) by the NutriLabels serving engine · Sources
Oatmeal serving size: 1 cup (40g). FDA files oatmeal under “Breakfast cereals (hot cereal type), hominy grits”, whose reference amount customarily consumed (RACC) is 1 cup prepared; 40 g plain dry cereal; 55 g flavored, sweetened cereal. The serving on your Nutrition Facts panel is the household measure closest to that reference amount, written as the measure followed by its metric weight.
The declaration
| FDA category | Cereals and Other Grain Products: Breakfast cereals (hot cereal type), hominy grits |
| Reference amount (RACC) | 1 cup prepared; 40 g plain dry cereal; 55 g flavored, sweetened cereal |
| FDA label statement | __ cup(s) (__ g) |
| Serving size declaration | 1 cup (40g) |
| Single-serving container | Any package under 80 g (2.8 oz) is one serving: the whole package is the serving size (21 CFR 101.9(b)(6)). |
| Dual-column panel | Packages holding 80 g–120 g (2.8 oz–4.2 oz) must show a second column for the whole package (21 CFR 101.9(b)(12)). |
Servings per container
| Package | Serving size | Servings per container |
|---|---|---|
| 8 oz (227 g) | 1 cup (40g) | about 6 |
| 12 oz (340 g) | 1 cup (40g) | about 9 |
| 16 oz (454 g) | 1 cup (40g) | about 11 |
| 24 oz (680 g) | 1 cup (40g) | about 17 |
| 32 oz (907 g) | 1 cup (40g) | about 23 |
Servings are rounded exactly as 21 CFR 101.9(b)(8) requires: to the nearest whole number, except between 2 and 5 servings, which round to the nearest half; “about” marks any rounding.
What this means for your label
- Declare the serving as 1 cup followed by its weight in grams, for example “1 cup (40g)”.
- Cups are written in 1/4- or 1/3-cup steps; tablespoons as 1, 1 1/3, 1 1/2, 1 2/3, 2 or 3; teaspoons as 1/8, 1/4, 1/2, 3/4, 1 or 2 (21 CFR 101.9(b)(5)(i)). Any other increment is not permitted.
- A package under 80 g is one serving no matter what: the panel reads “1 serving per container” and the serving size is the whole package.
- All the nutrient values on the panel are per this serving, rounded by 21 CFR 101.9(c). Change the serving and every number changes with it.
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Also covers
porridge · grits · cream of wheat · overnight oats · instant oatmeal · atole: all filed under the same FDA category, so the same serving applies.
Related serving sizes
- Hot cereal: 1 cup (40g)
Sources
- 21 CFR 101.12: Reference amounts customarily consumed per eating occasion (Table 2).
- 21 CFR 101.9(b), serving size: (b)(2) the three procedures, (b)(5) how the measure is written, (b)(6) single-serving containers, (b)(8) servings per container, (b)(12) dual column.