Packaged-food labels can look crowded, but a few sections answer most everyday shopping questions: how much counts as a serving, how many calories are in the amount you actually eat, which nutrients are listed, and what the percent Daily Value (%DV) means. Learning to read these details makes it easier to compare similar products without relying only on front-of-package claims.
This guide explains the U.S. Nutrition Facts label. Other countries may use different label formats and reference values, so check the rules that apply where you shop.
1. Start with serving size and servings per container
Look at the top of the label before comparing any other number. The serving size is the reference amount used for the nutrition figures, and the package may contain more than one serving. In the United States, serving sizes are based on amounts people typically consume; they are not recommendations for how much you should eat.
For example, if a label lists 150 calories per serving and the package contains two servings, eating the whole package means consuming 300 calories from that item. The same multiplication applies to the listed nutrients. Some packages also show a second column for the whole package, which can make the comparison easier.
2. Check calories against the amount you will eat
Calories describe the energy in one serving. Use the serving information to estimate the amount in your actual portion, rather than assuming the number applies to the entire bag, bottle, or box. Calorie needs vary by person and activity level, so the label’s 2,000-calorie reference is a general guide, not a personal target.
3. Use % Daily Value to compare nutrients
The percent Daily Value shows how much a nutrient in one serving contributes to a general daily reference amount. The U.S. Food and Drug Administration offers a simple rule of thumb: 5% DV or less is considered low, while 20% DV or more is considered high. These are quick comparison aids, not a score for whether an entire food is good or bad.
When comparing similar products, look at the nutrients that matter to your needs. For example, you might compare sodium between two soups or added sugars between two breakfast cereals. Check that the serving sizes are comparable; otherwise, the percentages can give a misleading impression.
4. Distinguish total sugars from added sugars
Total sugars include sugars naturally present in ingredients such as milk and fruit, as well as sugars added during processing. The added-sugars line identifies the amount that comes from added sweeteners and certain concentrated sources. On the U.S. label, added sugars also have a %DV, which can help you compare products.
Do not assume that two products with the same total-sugar number are nutritionally identical. Read the ingredient list and the added-sugars line together, and consider the rest of the label rather than judging a product from one number alone.
5. Look at sodium, saturated fat, and fiber
Sodium and saturated fat are among the nutrients the FDA says consumers may want to limit, depending on their dietary needs. Dietary fiber is one of the nutrients consumers are often encouraged to get more of. Comparing the amounts and %DV in similar products can help you make a more informed choice.
Context matters: a single nutrient does not tell the whole story about a food or your overall diet. If you have a medical condition or a specific dietary plan, use the label in the way your qualified health professional recommends.
6. Read the ingredient list as a second step
The Nutrition Facts panel summarizes nutrients; the ingredient list tells you what the product is made from. Ingredients are generally listed in descending order by weight under U.S. labeling rules. Check the list if you need to identify a particular ingredient, allergen, sweetener, or source of a nutrient. Always read the specific package because recipes and formulations can change.
7. Compare products in a consistent way
- Compare products in the same category, such as two breads or two canned soups.
- Check serving size and servings per package first.
- Compare calories and the nutrients relevant to your needs, including %DV.
- Review added sugars and sodium where they are important to your choice.
- Read the ingredient list and any allergen statements.
- Recheck the package when you buy it again; labels and recipes can change.
8. Use reliable label guidance
The FDA’s guide to understanding the Nutrition Facts label explains serving information, calories, nutrients, and %DV. Its serving-size guide explains why the amount on the label is a comparison reference rather than a recommendation. These official resources are useful if you want to check a detail beyond this quick guide.
The bottom line
Read the serving size before the numbers, use %DV to compare similar foods, distinguish total sugars from added sugars, and check the ingredient list when you need more detail. A label is a practical tool for comparing products—not a substitute for your individual nutrition needs or professional advice when you need it.