FDA serving size regulations are built on a system called Reference Amounts Customarily Consumed, or RACC, which assigns a specific reference amount to each category of packaged food. Those reference amounts, listed in 21 CFR § 101.12, become the basis for the serving size a manufacturer prints on the Nutrition Facts label under 21 CFR § 101.9. A RACC reflects how much people typically eat in one sitting, not how much they should eat, and it is set by food category rather than by product, so a manufacturer cannot pick a smaller number to make the nutrition data look better.1eCFR. 21 CFR 101.12 – Reference Amounts Customarily Consumed Per Eating Occasion
How the RACC Sets the Serving Size
Every packaged food falls into a category, and every category has a RACC. Snack chips and pretzels sit at 30 grams. Soups are 245 grams. Carbonated and noncarbonated beverages use 360 mL, which is 12 fluid ounces.2eCFR. 21 CFR 101.12 – Reference Amounts Customarily Consumed Per Eating Occasion The manufacturer starts with the applicable RACC and then applies the rules in § 101.9 to arrive at the serving size actually printed on the package.
The FDA derived these figures from national food consumption surveys — the USDA’s Nationwide Food Consumption Surveys from 1977–1978 and 1987–1988, updated with NHANES data covering 2003 through 2008. The regulation requires any survey used for this purpose to have a sample size representative of the relevant population and to reflect consumption under real-world conditions.1eCFR. 21 CFR 101.12 – Reference Amounts Customarily Consumed Per Eating Occasion Some RACC values were revised significantly in the FDA’s 2016 update. Ice cream moved from a half-cup to two-thirds of a cup. Yogurt dropped from 8 ounces to 6. Soda moved from 8 ounces to 12.3U.S. Food and Drug Administration. Changes to the Nutrition Facts Label
When the Whole Package Is One Serving
Under 21 CFR § 101.9(b)(6), a product packaged and sold individually that contains less than 200 percent of its RACC must be labeled as a single serving. The whole container becomes one serving, no matter where the amount falls within that range.4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
A 20-ounce soda bottle is the standard example. It holds about 167 percent of the 12-ounce beverage RACC, so the label has to show calories and nutrients for the full 20 ounces. Under the earlier rules, that same bottle could be labeled as 2.5 servings, which made per-serving calories look lower than what a person drinking the whole bottle was actually getting. Closing that loophole was one of the specific goals of the 2016 update.3U.S. Food and Drug Administration. Changes to the Nutrition Facts Label
Discrete units — muffins, sliced items, wrapped pieces inside a larger box — follow a parallel rule. A single piece that weighs from 67 percent up to less than 200 percent of the RACC counts as one serving. If a single piece weighs more than 200 percent but no more than 300 percent of the RACC, the serving size drops to the amount approximating the reference amount, and the label must add a second column showing the nutrition data per individual unit.5eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
Dual-Column Labels for Mid-Size Packages
Products packaged and sold individually that contain at least 200 percent and up to 300 percent of the RACC have to carry a dual-column Nutrition Facts label under 21 CFR § 101.9(b)(12)(i). One column shows the values per serving, based on the RACC. The second column shows the values for the entire package.4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
A 24-ounce soda sits at exactly 200 percent of the 12-ounce RACC, so it needs one column for a 12-ounce serving and another for the full bottle. A pint of ice cream lands in the same zone. Both columns must include the full set of required nutrients: total fat, saturated fat, sodium, total sugars, and everything else the rule mandates.3U.S. Food and Drug Administration. Changes to the Nutrition Facts Label
Above 300 percent of the RACC, dual-column labeling is not required. A family-size bag of chips or a two-liter bottle of soda uses the RACC-derived serving size and lists servings per container in the ordinary way. The dual-column rule targets the middle ground: packages holding multiple servings on paper, but small enough that one person might realistically finish them in one sitting.
Rounding on Servings and Calories
The number of servings per container is rounded before it is printed. Products with two to five servings round to the nearest half serving. Products with more than five servings round to the nearest whole number. Whenever rounding is used, the label has to include the word “about” — for example, “about 3.5 servings.”4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
Calories are rounded on their own schedule. At 50 calories or fewer per serving, calories are rounded to the nearest 5. Above 50, they are rounded to the nearest 10. Products with fewer than 5 calories per serving can list calories as zero.4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food That last rule is why cooking sprays and certain breath mints can display “0 calories” even though they do contain some.
How the Label Must Look
Formatting is regulated down to the point size. Under 21 CFR § 101.9(d), all nutrition information must sit inside a bordered box, printed in black or a single color on a white or neutral contrasting background, in a single easy-to-read typeface using upper and lower case letters. Letters cannot touch each other, and there must be at least one point of leading between lines.6eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
Some elements get extra visual weight. “Serving size” has to be bold or extra bold and printed in a type size of at least 10 point. “Servings per container” sits directly below the “Nutrition Facts” heading and shares the 10-point minimum. The calorie declaration is set in a larger type size than the surrounding text so it stands out at a glance.4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food
When a label uses multiple columns (such as “as packaged” alongside “as prepared”), vertical lines separate the columns, both sets of values must be equally prominent, and the headings have to describe the form of the food accurately — for example, “Per 1/4 cup mix” and “Per prepared portion.”4eCFR. 21 CFR 101.9 – Nutrition Labeling of Food Manufacturers can also add voluntary columns under § 101.9(b)(10), such as declarations per 100 g or 100 mL, per single unit when the serving size covers multiple units, or per cup popped for popcorn in a multi-serving container.
Special RACCs for Infants and Young Children
Products specially formulated for infants (up to 12 months) or children aged 1 through 3 use a separate table of RACC values in 21 CFR § 101.12. Those reference amounts are substantially lower than the general food supply values.1eCFR. 21 CFR 101.12 – Reference Amounts Customarily Consumed Per Eating Occasion A few examples:
- Dry instant cereal: 15 grams
- Ready-to-serve dinners or soups for young children: 170 grams
- Ready-to-serve fruits for young children: 125 grams
- Ready-to-eat cereals: 7 grams for infants, 20 grams for children aged 1 through 3
- Juices: 120 mL for both age groups
These smaller reference amounts apply only when the product is actually formulated or processed for infants or children under 4. A regular cereal that happens to be popular with toddlers still falls under the general-population RACC.1eCFR. 21 CFR 101.12 – Reference Amounts Customarily Consumed Per Eating Occasion
Exemptions and Special Formats
Not every package needs a full Nutrition Facts panel. Packages with less than 12 square inches of total label surface area are exempt from standard nutrition labeling, provided the label makes no nutrition claims; the manufacturer instead prints an address or phone number consumers can use to request the information. Packages of up to 40 square inches can use a modified format, presenting the data in a tabular or linear layout instead of the standard vertical column.7eCFR. 21 CFR Part 101 – Food Labeling
Small businesses have separate exemptions. A retailer with no more than $500,000 in total annual gross sales, or no more than $50,000 in annual food sales to consumers, does not need to provide nutrition labeling and does not need to file anything with the FDA. A low-volume product exemption applies to companies with fewer than 100 full-time equivalent employees selling fewer than 100,000 units of a particular product in a 12-month period; that one requires an annual notice filed with the FDA and does not cover products making nutrition claims.8U.S. Food and Drug Administration. Small Business Nutrition Labeling Exemption
Variety packs with two or more separately packaged foods intended to be eaten individually can use an aggregate display. Each food’s identity appears immediately to the right of the “Nutrition Facts” heading, and the weight amounts and percent Daily Values for each nutrient are listed in separate columns under each food’s name.7eCFR. 21 CFR Part 101 – Food Labeling
What Happens When a Label Is Wrong
A product with an inaccurate or noncompliant Nutrition Facts label is considered misbranded under the Federal Food, Drug, and Cosmetic Act. Enforcement usually begins with a warning letter that identifies the violation and sets a deadline to correct it. Warning letters are public, so the reputational cost often exceeds the formal penalty.
If a company does not respond, the FDA can seek injunctions to stop sales or seize the misbranded goods. Criminal penalties for misbranding under 21 U.S.C. § 333(a)(1) reach up to one year of imprisonment, a fine of up to $1,000, or both.9Office of the Law Revision Counsel. 21 USC 333 – Penalties For products that are both misbranded and adulterated, civil penalties can reach $50,000 per individual or $250,000 per entity, with a cap of $500,000 per proceeding. The larger practical costs typically come from recalls, destroyed inventory, and the public record of noncompliance.