How to Read a Nutrition Facts Label (Using a STAT Bar)

How to read a nutrition facts label, top to bottom

The Nutrition Facts panel is built to be read in order. Each block answers one question, and the answer to the first one changes how you read everything after it.

1. Serving information. Find "servings per container" and "serving size" at the top. Every number on the panel, including calories, refers to one serving.
2. Calories. The big number is calories in one serving. FDA uses 2,000 calories a day as a general guide, and your own needs may be higher or lower.
3. Nutrients to get less of. Saturated fat, sodium and added sugars are the three FDA asks most people to keep lower.
4. Nutrients to get more of. Dietary fiber, vitamin D, calcium, iron and potassium are the ones most people don't get enough of.
5. The % Daily Value column. Use it to see whether a serving is low or high in each nutrient, using the 5/20 rule.
6. The footnote. It explains that the % Daily Value tells you how much a nutrient in a serving contributes to a daily diet, and that 2,000 calories a day is used for general nutrition advice.
7. Below the panel. The ingredient list and the allergen statement are not part of the Nutrition Facts box, but they finish the job.

If you remember one thing, make it step one. A package that holds two servings doubles every number on the panel if you eat the whole thing.

What does serving size mean on a nutrition label?

FDA's label guide is direct about this: the serving size "reflects the amount that people typically eat or drink. It is not a recommendation of how much you should eat or drink." Serving sizes are standardized so that similar foods can be compared, and they're given in familiar units (a bar, a cup, a piece) followed by grams.

Two layouts are worth knowing:

• Single-serving packages. A snack bar, a can of soup meant for one, a bottle of a drink: when the whole package is one serving, the panel shows the whole package.
• Dual-column labels. For some packages that people could eat in one or several sittings, FDA requires two columns: "per serving" and "per package" (or "per unit"). FDA's own example is a bag of pretzels with 3 servings, which shows both columns so you can see what the whole bag adds up to.

A related rule came up in food labeling news just last month. NC State Extension's October 21, 2026 Food Label News explained that Nutrition Facts labels are required to describe a product "as sold" (as packaged), and that an extra "as prepared" column is generally voluntary. If a mix or a frozen food shows two columns, check which one matches what you'll actually eat.

What does % Daily Value mean on a nutrition label?

The % Daily Value (%DV) puts every nutrient on the same 0 to 100% scale for a day. FDA's label guide makes two points that clear up most of the confusion:

• The %DV column "doesn't add up vertically to 100%." Each line is its own percentage of its own daily target.
• Use the 5/20 rule: 5% DV or less of a nutrient per serving is low, and 20% DV or more is high.

The Daily Values behind those percentages are fixed reference amounts for adults and children 4 years and older. These are the ones you'll see most on a snack label:

Source: FDA, Daily Value on the Nutrition and Supplement Facts Labels.

A few lines have no %DV at all. FDA's Lows and Highs page notes that trans fat and total sugars have no %DV, and that protein generally has none listed either, so you use the grams as your guide.

Total sugars vs added sugars on a nutrition label

These two lines answer different questions.

• Total Sugars counts all the sugar in a serving, including sugar that's naturally in ingredients like milk or fruit. It has no %DV.
• Includes Xg Added Sugars counts sugars added during processing or packaging, such as table sugar, syrups and honey. The word "Includes" matters: FDA explains that added sugars are counted inside Total Sugars, not on top of them. Added sugars carry a %DV based on 50 g a day.

The quickest read is the %DV next to Added Sugars, using the same 5/20 rule. For a deeper look at the two sugar lines and the sweeteners that sit behind them, see our guide to protein bars with no added sugar.

One more sweetener detail shows up on a lot of bar labels. Under a 2020 FDA guidance, allulose can be left out of Total Sugars and Added Sugars on the panel, and its calories can be counted at 0.4 calories per gram. It still appears by name in the ingredient list.

How to read the carbohydrate lines: fiber, sugar alcohols and net carbs

Total Carbohydrate is the big number. Dietary fiber and the sugars sit indented under it because they're part of it.

• Dietary fiber has a %DV based on 28 g a day, and it's one of the nutrients FDA lists as one to get more of. FDA keeps a list of fibers that count on the label, and inulin and inulin-type fructans, the fiber in chicory root, are on it. So when a bar lists chicory root fiber near the top of its ingredients, that's usually where much of its fiber line comes from.
• Sugar alcohol is a voluntary line under the federal labeling rule (21 CFR 101.9). A company may list it, and it has to list it when the package makes a claim about sugar alcohol, total sugars or added sugars and the food contains sugar alcohols. Erythritol, maltitol, sorbitol and xylitol are common names in the ingredient list.
• Net carbs is not a line on the Nutrition Facts panel. When you see it on the front of a package, it's a number the company worked out on its own, and the method can vary. If you track carbs, read Total Carbohydrate, fiber and sugar alcohol from the panel itself.

Going deeper on the polyol line? See sugar alcohols in protein bars.

How to read nutrition facts for protein

Read the grams first. Under US rules, protein is always listed in grams, and FDA's guidance is to "use the number of grams (g) as a guide," since protein generally has no %DV on the label.

When a protein %DV is printed, it isn't simply the grams divided by 50. The federal rule calculates it from the protein amount corrected for protein quality, so two foods with the same grams can show different percentages. We walk through the math, with a worked example, in protein daily value vs grams.

Then look at the ingredient list to see which protein sources come first. That tells you more about what's in the serving than the front of the package does.

A real protein bar label, read line by line

Here's the Nutrition Facts panel for one real bar: our Chocolate flavor, transcribed from the box. We use it because it has every line discussed above, including sugar alcohol and a printed protein %DV. The point is the reading method, which works the same on any bar in the aisle.

Source: STAT Chocolate Nutrition Facts panel. Full panels for all three flavors are on our STAT label facts page.

Put together, the 5/20 rule gives a quick summary of this bar: high in fiber, moderate in saturated fat, low in sodium and added sugars, with 16 g of protein. That's the kind of read you can do on any label in about a minute.

Notice what isn't on the panel. The bar has 100 mg of caffeine, but caffeine is not one of the nutrients the Nutrition Facts label must list (FDA's required list is total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, total sugars, added sugars, protein, and certain vitamins and minerals). When a company states caffeine, it shows up elsewhere on the package. More on that below.

How to read the ingredient list and allergen statement

The ingredient list is where the label stops being numbers and starts being food. Federal rules (21 CFR 101.4) require ingredients to be listed "in descending order of predominance by weight," so the first few ingredients make up most of the product.

Here's how the first five ingredients read on the same Chocolate bar: almond butter; a protein blend (whey protein concentrate, milk protein isolate, whey protein isolate); chicory root fiber; allulose; soy protein crisps. That lines up with the panel. The almond butter explains much of the fat, the protein blend explains the protein, and the chicory root fiber explains the high fiber line. If an ingredient name is unfamiliar, look it up before you decide. Our explainer on what natural flavors are covers one of the most common ones.

Then check allergens. FDA recognizes nine major food allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame. Sesame became the ninth on January 1, 2023, so older label guides that list eight are out of date. A major allergen must be named either in parentheses in the ingredient list, like "whey (milk)," or in a "Contains" statement right after the ingredients, like "Contains wheat, milk, and soy."

A "may contain" or "produced in a facility that also uses" line is different. FDA notes that these advisory statements "are not required by law." They tell you about possible cross-contact, so if you have a serious allergy, read them every time.

For a block-by-block look at what those ingredient names mean, see what is in a protein bar.

What the Nutrition Facts label doesn't tell you

Three things people look for aren't on the panel at all.

• Caffeine. It isn't a required Nutrition Facts line. Look for a stated milligram amount elsewhere on the package, and look in the ingredient list for coffee, coffee fruit extract, tea or other caffeine sources. Our guide to how much caffeine is in a protein bar shows where to find it.
• Net carbs. As above, it's a company's own figure, not a panel line.
• How processed a food is. HHS restarted work on a federal definition of ultra-processed foods in October, Food World News reported on October 21, 2026, citing Politico. No definition has been published and no labeling rule has been proposed. As that article put it, "Shoppers who want to limit highly processed foods can already use the Nutrition Facts panel and ingredient list to compare added sugars, sodium and fiber."

Front-of-package labeling is changing too, slowly. FDA proposed a "Nutrition Info box" in January 2025 that would rate saturated fat, sodium and added sugars as Low, Med or High on the front of the package. The comment period closed July 15, 2025, and the federal regulatory agenda lists the final rule for December 2026. Until anything changes, the panel on the back is the tool you have, and the 5/20 rule already gives you the same low and high read.

How to compare two nutrition labels in the aisle

Comparing labels is where reading them pays off.

• Match the serving sizes first. If one bar is 40 g and another is 60 g, the bigger one will look higher in almost everything.
• Compare %DV, not just grams, for saturated fat, sodium, fiber and added sugars. The 5/20 rule works the same on both labels.
• Read the protein grams side by side, then glance at which protein sources come first in each ingredient list.
• Check the lines that matter for your day. On a long shift that might be caffeine, which you'll find off the panel. For allergies, it's the "Contains" and "may contain" lines.

For a shorter checklist on choosing a bar once you can read the label, see what to look for in a healthy energy bar.

Our recommendation: STAT Energy Bar

STAT Energy Bar: 100 mg caffeine, 16-19 g protein, 0 g added sugar.

If you want a bar whose label reads cleanly with the method above, our pick is STAT Energy Bar. Every flavor prints protein in grams and as a % Daily Value: Chocolate 16 g (28% DV), Peanut Butter Espresso 17 g (31% DV) and Salted Caramel Coffee 19 g (34% DV). Fiber is high on all three at 6 to 7 g (21% to 25% DV), Added Sugars is 0 g, and the caffeine is stated as a number on the package instead of left for you to guess. Each bar is 200 to 210 calories.

It's 3am, there are four hours left on your shift, dinner was a long time ago and the next break could get pulled any minute. Nurse, firefighter, dispatcher, warehouse lead, anyone on a long shift: that's the moment STAT Energy Bar was made for, when seconds count. Each bar has 100mg of caffeine for energy and alertness, about what's in a strong cup of coffee, plus 16 to 19g of protein and 0g added sugar, and you can eat it in two minutes and get right back to work. Most protein bars have no caffeine at all. STAT has 100mg, along with maca, ashwagandha, cordyceps and reishi. If you like chocolate, the Chocolate bar (16g protein) gets its caffeine from coffee fruit extract. If you're a coffee person, Peanut Butter Espresso (17g) and Salted Caramel Coffee (19g) use real coffee plus coffee fruit extract. Each bar's protein comes from a blend of whey and milk proteins. All three contain milk and soy; Chocolate and Salted Caramel Coffee contain almonds, and Peanut Butter Espresso contains peanuts. See what's inside every STAT bar, compare all three panels on STAT by the numbers, or read more about our caffeine protein bar.

Not sure which flavor fits? Variety, 3 Boxes has one 12-count box of each, or you can shop all three flavors. Subscribe and save 10%, and orders over $50 ship free. Curious how STAT compares with other caffeine bars? Turn the box over and read the panel.

How to read a nutrition facts label: FAQ

How do you read a nutrition facts label step by step?

Start with the serving size and servings per container, because every number refers to one serving. Then read calories, check the nutrients to get less of (saturated fat, sodium, added sugars) and more of (fiber, vitamin D, calcium, iron, potassium), use the % Daily Value with the 5/20 rule, and finish with the ingredient list and allergens.

What is the 5/20 rule on a nutrition label?

It's FDA's quick guide to the % Daily Value column. A serving with 5% DV or less of a nutrient is low in that nutrient, and a serving with 20% DV or more is high. Aim low for saturated fat, sodium and added sugars, and high for fiber and the listed vitamins and minerals.

What does % Daily Value mean on a nutrition label?

It shows how much of a day's reference amount one serving provides, based on a 2,000 calorie diet. The percentages don't add up to 100% down the column; each line is measured against its own Daily Value, such as 20 g for saturated fat or 2,300 mg for sodium.

What's the difference between total sugars and added sugars?

Total Sugars counts all the sugar in a serving, including sugar naturally in milk or fruit. Added Sugars counts sugars added during processing, like syrups or table sugar, and it's included inside the Total Sugars number. Added Sugars has a %DV based on 50 g a day; Total Sugars has none.

How do you read nutrition facts for protein?

Read the grams. Protein is always listed in grams, and FDA suggests using the grams as your guide because protein usually has no %DV. When a %DV is printed, it's based on protein quality, so it can be lower than the grams divided by 50.

Is caffeine listed on the nutrition facts label?

No. Caffeine isn't one of the nutrients the Nutrition Facts panel must list. If a product states its caffeine, the amount appears elsewhere on the package, and the ingredient list shows sources such as coffee, coffee fruit extract or tea.

Do sugar alcohols and allulose count as sugar on the label?

Sugar alcohols aren't counted in Total Sugars; they can appear on their own Sugar Alcohol line, which is voluntary unless the package makes a sugar claim. Under a 2020 FDA guidance, allulose can be left out of Total Sugars and Added Sugars. Both still appear by name in the ingredient list.

Why are ingredients listed in that order?

Federal rules require ingredients to be listed in descending order of predominance by weight. The first ingredient is the one there's the most of, so the first few names tell you what the food is mostly made of.

Ready to put it into practice? Read the panel on your next bar, then compare it with STAT.

References

1. U.S. Food and Drug Administration. How to Understand and Use the Nutrition Facts Label (content current as of March 5, 2024). https://www.fda.gov/food/nutrition-facts-label/how-understand-and-use-nutrition-facts-label
2. U.S. Food and Drug Administration. Daily Value on the Nutrition and Supplement Facts Labels (content current as of March 5, 2024). https://www.fda.gov/food/nutrition-facts-label/daily-value-nutrition-and-supplement-facts-labels
3. U.S. Food and Drug Administration. The Lows and Highs of Percent Daily Value on the Nutrition Facts Label (content current as of March 5, 2024). https://www.fda.gov/food/nutrition-facts-label/lows-and-highs-percent-daily-value-nutrition-facts-label
4. U.S. Food and Drug Administration. Added Sugars on the Nutrition Facts Label (content current as of March 4, 2026). https://www.fda.gov/food/nutrition-facts-label/added-sugars-nutrition-facts-label
5. Code of Federal Regulations. 21 CFR 101.9, Nutrition labeling of food (sugar alcohol and protein declarations). https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-101/subpart-A/section-101.9
6. Code of Federal Regulations. 21 CFR 101.4, Food; designation of ingredients. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-101/subpart-A/section-101.4
7. U.S. Food and Drug Administration. Questions and Answers on Dietary Fiber (content current as of July 25, 2024). https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/questions-and-answers-dietary-fiber
8. U.S. Food and Drug Administration. The Declaration of Allulose and Calories from Allulose on Nutrition and Supplement Facts Labels: Guidance for Industry (October 2020). https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-declaration-allulose-and-calories-allulose-nutrition-and-supplement-facts-labels
9. U.S. Food and Drug Administration. Food Allergies (content current as of March 11, 2026). https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/food-allergies
10. U.S. Food and Drug Administration. Front-of-Package Nutrition Labeling. https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/front-package-nutrition-labeling
11. Office of Information and Regulatory Affairs. Unified Agenda, RIN 0910-AI80, Food Labeling: Front-of-Package Nutrition Information (final rule listed for 12/2026). https://www.reginfo.gov/public/do/eAgendaViewRule?RIN=0910-AI80&pubId=202510
12. Fragedakis N. "As Prepared" and Dual Column Label requirements. NC State Extension, Food Label News, October 21, 2026. https://foodbusiness.ces.ncsu.edu/news/food-labeling-news-as-prepared-and-dual-column-label-requirements/
13. Walker A. Food World News, October 21, 2026 (ultra-processed food definition, citing Politico, October 17, 2026). https://www.foodworldnews.com/articles/81716/20261021/kennedy-revives-push-define-ultraprocessed-foods-before-midterms-no-definition-warning-label.htm
14. STAT Nutrition Facts panels and ingredient lists. /stat-by-the-numbers