When you pick up a packaged food, the nutrition label offers more than just calorie information. One figure you may notice is % RDA, which shows how much a serving contributes to the recommended daily amount of a nutrient. However, many consumers either overlook it or assume that a higher percentage automatically means the food is unhealthy. Understanding RDA, serving size, and daily reference values can help you read food labels more effectively.

What Is RDA?

RDA stands for Recommended Dietary Allowance. It refers to the amount of a nutrient recommended to meet the nutritional needs of most healthy people. In India, FSSAI uses reference values for nutrition labelling to help consumers understand how much a food contributes to their daily nutrient intake. These values are based on an average adult diet providing 2,000 kcal per day. However, % RDA is a general reference and not a personalised dietary recommendation. Nutritional needs can vary between individuals.

What Does % RDA Mean?

The % RDA tells you how much one serving contributes to the daily reference amount of a nutrient.

For example, if a product provides 10% of the daily reference value for sodium per serving, that serving contributes 10% of the reference amount used for food labelling. FSSAI’s labelling framework includes reference values for nutrients such as total fat, saturated fat, trans fat, added sugar and sodium. For sodium, the reference value is 2,000 mg per day, equivalent to about 5 g of salt. Importantly, % RDA is not a health score. A high percentage isn’t automatically bad, and a low percentage doesn’t necessarily make a product healthy.

Why Serving Size Matters

Before looking at % RDA, check the serving size. The percentage applies to the serving size mentioned on the package—not necessarily the amount you actually eat.

For example, if a snack provides 10% of the daily sodium reference value per serving and you eat three servings, you would consume about 30% of that reference amount from the product. This is particularly important for snacks and ready-to-eat foods, where people may consume more than the stated serving. So, always ask: How much is one serving, and how much am I actually eating?

Per 100 g and Per Serving: What’s the Difference?

Nutrition information may be given per 100 g or 100 ml and per serving. The per-100 g or 100 ml value helps you compare similar products, especially when their serving sizes differ. The per-serving value shows how much you consume based on the manufacturer’s stated serving size. Looking at both gives you a better understanding of the product.

Is a Higher % RDA Always Bad?

Not necessarily. What a high percentage means depends on which nutrient it represents.

For nutrients that people may need to limit, such as sodium, saturated fat and added sugar, a high contribution may be a reason to moderate consumption. At the same time, some nutrients are essential to the body. Therefore, you cannot judge a food simply by whether its % RDA is high or low. Consider the nutrient, the amount you consume and how the food fits into your overall diet.

How Can % RDA Add Up?

One product may not contribute a large amount to your daily intake, but several foods can add up. For example, one packaged snack could contribute 15% of your daily sodium reference value, while another food later in the day contributes another 20%. Sauces, instant meals and other packaged foods can increase your total intake further.

This makes % RDA useful as a daily guide rather than a product score.

Does % RDA Apply to Everyone?

No. The reference values on food labels are meant for general guidance. Nutritional requirements vary with factors such as age, sex, activity level and physiological conditions. People following medically advised diets may also have different nutritional targets.

FSSAI also recognises that foods intended for specific age groups or physiological conditions may require appropriate reference values. Therefore, the % RDA on a standard food label should not be treated as a personalised recommendation.

Why Is % RDA Getting More Attention?

Consumers are paying greater attention to sugar, salt, fat and other nutrients in packaged foods. FSSAI has also been reviewing food-labelling requirements, including proposals to make information on added sugar, saturated fat and sodium more prominent. Clearer labels can help consumers make informed choices, but understanding the information remains equally important.

How to Read % RDA on a Food Pack

The next time you buy a packaged food:

• Check the serving size and compare it with the amount you actually eat.
• Check the number of servings in the pack.
• Look at the % RDA for nutrients that matter to your diet.
• Check the actual nutrient amount, not just the percentage.
• Compare similar products using their per-100 g or 100 ml values.
• Consider your overall diet, rather than judging one product alone.

The Bottom Line

% RDA is a useful tool for understanding nutrition labels, but it is not a personalised health score. It shows how much a serving contributes to a standard daily reference value. The key is to read it alongside the serving size, actual nutrient quantity and ingredient list. Once you understand these numbers, the nutrition panel becomes much easier to use.

So, the next time you pick up a packaged food, don’t stop at the front-of-pack claims. Turn the pack around, check the serving size and see what the % RDA is really telling you.