# Calculate your serving size Your granola bar weighs 38 grams. The FDA standard for granola bars is 40 grams. Should your serving size be 38g, 40g, or something else? BetterMenu helps you find the right answer — searching FDA reference amounts by product category and applying the rules that determine what your label requires. What is a serving size on a Nutrition Facts label? [#what-is-a-serving-size-on-a-nutrition-facts-label] The [serving size](/docs/guide/concepts/serving-size) on a Nutrition Facts label is the standardized amount the FDA considers a typical portion for your product category. It is not the amount you recommend eating — it is a reference point that makes labels comparable across similar products. The FDA defines these standard amounts — called RACC, which stands for Reference Amount Customarily Consumed — for over 130 food categories. In plain terms, a RACC is the standard portion size the FDA recommends for a given food category. Your serving size on the Nutrition Facts label must be based on the RACC that applies to your product type. For example, the RACC for granola bars is 40 grams; for ready-to-eat cereal it is 30 grams. Serving size also determines how nutrients appear as a percentage of [recommended daily intakes](/docs/guide/concepts/recommended-daily-intakes) on the label. BetterMenu surfaces these values so your regulatory affairs team does not need to look them up manually in federal tables. How do I find the RACC for my product? [#how-do-i-find-the-racc-for-my-product] In BetterMenu, go to the serving size configuration for your recipe and search by product category. Type a description of your product — "granola bar", "salad dressing", "ready-to-eat cereal" — and BetterMenu returns the matching FDA reference amount categories with their gram weights. Select the category that best describes your product. 1. Open the serving size configuration for your recipe. 2. Type your product category in the search field (e.g. "protein bar" or "snack cracker"). 3. Review the list of matching FDA reference categories with their gram weights. 4. Select the category that best fits your product. BetterMenu sets the serving size based on the applicable reference amount rules for that category. For discrete unit products — items sold as individual pieces, like bars or cookies — additional FDA rules determine whether to use the piece weight or the category reference amount. BetterMenu applies those rules automatically once you select the category. Can I enter my own serving size? [#can-i-enter-my-own-serving-size] Yes. If you already know the correct serving size for your product, you can enter a gram weight directly in the serving size field. BetterMenu uses grams as the standard [measurement unit](/docs/guide/concepts/measurement-unit) for serving size entry. This is the right approach when your product has a fixed unit weight — a 38g granola bar, a 15g single-serve protein powder packet — and your regulatory affairs team has already confirmed the serving size. Entering a custom gram weight bypasses the category search. BetterMenu uses whatever gram weight you enter for all [nutrition fact](/docs/guide/concepts/nutrition-fact) calculations, including the per-serving and per-container values on the label. If you are not certain which approach applies to your product, starting with the category search is the safer path — it surfaces the FDA reference amount for your product type before you commit to a number. You can always switch to a custom entry after reviewing the category rules. What if my recipe produces multiple serving sizes? [#what-if-my-recipe-produces-multiple-serving-sizes] Some products are sold in both single-serve and multi-serve formats — a protein bar sold individually and in a 12-pack box, or a snack food sold in a single-serve pouch and a resealable bag. BetterMenu lets you configure multiple serving sizes for a single recipe, each with its own independently calculated label. Each serving configuration has its own gram weight, its own [nutrition facts](/docs/guide/concepts/nutrition-fact) calculated from the recipe formula, and its own exportable label file. The underlying recipe formula stays the same — only the serving size and label output differ. This means your R\&D team formulates the recipe once, and your regulatory affairs team can produce compliant labels for every pack size without re-entering the formula. Each label reflects the correct per-serving nutrient values for that specific pack format. See [Export your label](/docs/guide/how-to/export-your-label) for how to download the label file for each serving.