How to Read a Nutrition Facts Label
Quick answer
A nutrition label helps compare packaged foods. Begin with serving size, then use calories and nutrient amounts in context. In Canada, the percent Daily Value can help identify whether a serving contains a little or a lot of a nutrient.
Step 1: serving size
All numbers apply to the stated amount, which may differ from the amount you eat.
Step 2: nutrients of interest
Compare fibre, sodium, sugars, saturated fat, protein and other nutrients relevant to the choice.
Step 3: ingredients
Ingredients are listed by weight. They reveal the food’s components but do not by themselves determine overall quality.
Two cereals may show similar calories, but one serving may differ in size and one may provide much more fibre and less sugar. Compare equivalent amounts when possible.
A simple way to read a Nutrition Facts table
Do not try to interpret every number at once. Start with the serving size because every number in the table refers to that amount. Then look at the nutrients that matter for the comparison you are making.
| Check | Why it matters | Useful question |
|---|---|---|
| Serving size | Sets the reference amount for all numbers below it. | Am I comparing the same amount of both foods? |
| % Daily Value | Helps show whether a serving contains a little or a lot of a nutrient. | Which product has more fibre or less sodium per comparable serving? |
| Ingredient list | Shows ingredients in descending order by weight. | What is this food mainly made from? |
Example: comparing two breakfast cereals
Suppose Cereal A lists a 30 g serving and Cereal B lists a 55 g serving. Looking only at the sugar number can mislead you because the serving amounts are different. First compare equivalent amounts or use the % Daily Value and serving information together. Then consider fibre, sodium and the ingredient list.
The label is best used as a comparison tool. It does not need to tell you whether a food is “allowed.” It helps you decide which option better fits what you want from that meal.
How to use % Daily Value without overthinking it
The % Daily Value (% DV) gives context for the amount of a nutrient in the stated serving. It is most useful when comparing similar products or deciding whether a food contributes a little or a lot of a nutrient.
Do not treat % DV as a personal prescription. Individual needs vary. For everyday shopping, the label is best used as a comparison tool rather than a scorecard.
Nutrition Facts table vs. ingredient list
| Use this | When you want to know… |
|---|---|
| Nutrition Facts table | How much energy, sodium, fibre, sugars, protein or listed vitamins and minerals are in the serving |
| Ingredient list | What the product is made from and which ingredients appear in the greatest amounts |
| Package claims | What the manufacturer is highlighting — but verify the claim against the facts table and ingredients when it matters |
A 30-second label comparison
- Check that the serving sizes are reasonably comparable.
- Compare the one or two nutrients that matter for your decision.
- Look at the ingredient list if you want more context about the food itself.
- Choose based on the whole product — taste, price, convenience and how you plan to use it still matter.
You rarely need to compare every number on the label.
Key terms
| Serving size | The quantity used for the label calculation. |
|---|---|
| Daily Value | A reference amount used to interpret nutrient quantities. |
| Ingredient list | Ingredients ordered by weight. |
| Nutrition claim | A regulated statement such as “source of fibre.” |
Common mistakes
- Reading nutrient numbers before checking the serving size.
- Comparing products with very different serving sizes as if the numbers were directly equivalent.
- Deciding a food is healthy or unhealthy based on one line of the Nutrition Facts table.
Practical takeaway
Use the label to compare similar foods. Check serving size first, then look at the nutrients that matter for your choice, and use the ingredient list for additional context.