Guide
Serving size on FDA Nutrition Facts labels
FDA serving sizes follow Reference Amounts Customarily Consumed, not the portion you wish people ate. A bakery brownie that is 3× the RACC may need dual-column labeling (per serving and per pack). Changing the serving to make calories look smaller is misbranding.
Reviewed against official guidance.SourcesNot legal advice.
The short answer
FDA serving sizes follow Reference Amounts Customarily Consumed, not the portion you wish people ate. A bakery brownie that is 3× the RACC may need dual-column labeling (per serving and per pack). Changing the serving to make calories look smaller is misbranding.
Where this shows up in a real kitchen
Diet culture wants a “serving” of four pretzels. FDA wants the amount people actually eat. Meal-prep brands sometimes set a serving as the whole 16 oz bowl, which can be honest, or as 4 oz of a bowl nobody splits, which is not.
The US rule
21 CFR 101.9 and 101.12 set RACCs and household measures. Dual-column rules apply to certain packages that contain more than 200% of the RACC and less than 300% in some cases — read the current table rather than memorising a tweet. The household measure (1 cookie, ½ cup) sits with the gram weight.
How to apply it
Look up the RACC for the category. Weigh your piece. If one cookie is 40 g and the RACC is 30 g, you still describe one cookie and follow the rounding and dual-column tests. Do not call a 90 g muffin “two servings” on the panel if people eat the muffin.
- Find the RACC for the food, not a cousin category that looks kinder.
- Weigh the unit you sell.
- Apply single- versus dual-column rules.
- Keep ingredients/allergens about the food, not about a fantasy serving.
Worked example
A 90 g stuffed cookie sold as one unit: the panel should not pretend it is three 30 g servings to triple the servings-per-container and shrink calories. Dual-column per cookie and per serving may be required. Ingredients and allergens still describe the whole cookie.
Checks that belong on this pack
| Check | Why it matters |
|---|---|
| Household measure matches the unit (1 bar, 1 pouch) | “About 2.3 cookies” needs a hard look. |
| Grams sit next to the household measure | A serving without mass is incomplete. |
| Calories were not improved by shrinking the serving | That is the classic misbrand. |
| Allergen names do not change with serving size | Milk is in the cookie whether you call it one serving or two. |
Using a UK “portion” from a supermarket own-label as the FDA serving
UK portion guidance is not 21 CFR 101.12. Recalculate for the US pack.
What LabelClear can and cannot print
Serving size is a Nutrition Facts problem. Get ingredients and allergens right in parallel — they do not scale away when you split servings.
Questions
Can I use per 100 g like Europe?
What if my cookie is huge?
Do sipping straws and in-pack prizes count?
Official sources
Everything on this page traces back to these. Where they and we disagree, they are right — tell us and we'll fix it.
- Nutrition labeling requirementsU.S. Food and Drug Administration
- 21 CFR Part 101 — Food labelingeCFR / National Archives
- Food Labeling GuideU.S. Food and Drug Administration
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