Updated April 2026 · Reviewed by the Online Nutrition Planet editorial team

The Nutrition Facts label on packaged foods is one of the most useful tools in modern grocery shopping — if you know how to read it. Most people glance at calories and move on. This guide walks through what every section of the label actually tells you, which numbers matter most, and how to use the label to make better food choices.

The sections of a Nutrition Facts label

1. Serving size (read this first)

Everything else on the label applies to one serving — not the whole package. If a bag of chips lists 150 calories per serving but contains 3 servings, the whole bag is 450 calories. Check the serving size before looking at any other number. Updated FDA labeling standards have made serving sizes more realistic in recent years, but many packaged foods still contain multiple servings that people eat in one sitting.

2. Calories

Total energy in one serving. Useful for portion awareness but not the only thing that matters. A 200-calorie serving of almonds affects your body very differently than a 200-calorie serving of candy.

3. Total fat

Shows grams of total fat per serving, with subcategories for saturated fat and trans fat. Focus on the saturated fat number — aim to keep saturated fat under 10% of daily calories. Trans fat should ideally be zero (the FDA banned most artificial trans fats in 2018, but small amounts may still appear in some processed foods).

4. Cholesterol

Grams of cholesterol per serving. For most people, dietary cholesterol has less impact on blood cholesterol than previously thought. If you don't have elevated cholesterol or cardiovascular risk factors, this number is less critical than the saturated fat line.

5. Sodium

Listed in milligrams. The daily recommended limit is 2,300 mg for most adults — about 1 teaspoon of salt. Processed foods are the main source of excess sodium in the standard American diet. A single item with more than 20% of daily value is high in sodium; aim for items with 5% or less where possible.

6. Total carbohydrate

Includes all carbohydrates, broken down into:

  • Dietary fiber — higher is generally better. Look for foods with at least 3 grams of fiber per serving.
  • Total sugars — includes both naturally occurring and added sugars.
  • Added sugars — a newer addition to the label showing sugars added during processing. Aim to keep added sugars low. The American Heart Association recommends less than 25 grams per day for women and 36 for men.

7. Protein

Grams of protein per serving. Most Americans get enough total protein, but aiming for 15–30 grams per meal helps with satiety and muscle maintenance.

8. Vitamins and minerals

The updated FDA label highlights vitamin D, calcium, iron, and potassium specifically because these are commonly under-consumed. Look for foods that provide at least 10% of the daily value for these nutrients.

9. Percent Daily Value (%DV)

Shows what percentage of the recommended daily intake one serving provides. Quick rules of thumb:

  • 5% or less is low — not much of that nutrient
  • 20% or more is high — a significant amount

For nutrients you want more of (fiber, vitamin D, calcium, iron, potassium), look for high %DV. For nutrients you want less of (saturated fat, sodium, added sugars), look for low %DV.

The ingredients list matters as much as the Nutrition Facts

The ingredient list is required on all packaged foods and is ordered by weight. The first ingredient is present in the greatest amount, and so on. Some practical rules:

  • Shorter is usually better. Fewer ingredients often means less processing.
  • Look for whole foods in the first few positions. "Whole wheat flour" beats "enriched wheat flour" as a first ingredient.
  • Watch for added sugars under multiple names. Cane sugar, high fructose corn syrup, honey, agave, maltose, dextrose, and many others are all forms of added sugar.
  • Avoid "partially hydrogenated oils" (the source of artificial trans fats) — though rare now, they can still appear.
  • Be skeptical of health claims on the front of the package. "All natural," "made with real fruit," and "good source of fiber" are often marketing. The real information is on the back.

Practical tips for label reading

  1. Start with serving size. Everything else depends on it.
  2. Check the ingredient list. Look for real foods near the top.
  3. Scan added sugars. Keep daily added sugar moderate.
  4. Check sodium if you're watching blood pressure.
  5. Look at fiber for packaged grain foods. Higher fiber generally means less refined.
  6. Don't obsess. Label reading is a tool, not a religion. Use it for the 20% of foods where it matters most and move on.

The bottom line

The Nutrition Facts label is a useful tool once you know what to focus on. Start with serving size, scan for saturated fat, sodium, fiber, and added sugars, and check the ingredient list for whole foods and minimal processing. You don't need to memorize every number — a few quick scans tell you most of what you need to know.

For personalized guidance on reading labels around specific health goals or medical conditions, a registered dietitian can help. See our online nutrition coach reviews.

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Written by the Online Nutrition Planet editorial team. Questions? Contact us.

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