Dietary Reference Intake

Calculate Dietary Reference Intake for your body growth

Dietary Reference Intake

Dietary reference intake or DRI are important recommendations which inform as on the required nutrient intake per day. These scientifically derived values are essential for nutritionists, clinicians, and other nutrition-oriented personnel and organizations when designing food labeling and nutritional guidelines, as well as when aiming to avoid toxicity levels of nutrients in food and supplements.

What is dietary reference intake (DRI)?

DRIs consist of several key values for each nutrient:

  • Recommended Dietary Allowance (RDA): The requirement established as a ‘reference amount’ implies that it satisfies the requirement of practically all healthy people of that age and sex.
  • Adequate Intake (AI): This is applied where there is insufficient data to establish an RDA, the level assumed is believed to be adequate to cover the population’s nutritional needs.

  • Estimated Average Requirement (EAR): This is the daily intake believed to satisfy the requirement of only 50% health wise of people in a given population.

What is the importance of  DRI?

The only importance of the DRI calculator is that it help you to determine whether your intake of a particular nutrient is adequate or not. A correct amount of nutrient intake helps metabolism of a body perform well for the body growth and fitness.

Here is the guide that can help you calculate the DRI:

1. Calculate Protein Intake

50-150% of the RDA for vitamins and minerals (for adults)

Example: If your daily requirement is 2000 calories than protein calorie should lie between 200 – 600 calories.

Convert calories to grams: That is 4 calories for every gram of protein consumed.

Therefore, if 200-600 calories are considered as protein source, then it would be 50-150 grams of protein per day.

2. Calculate Fat Intake

Depending on the person’s age, between 20% to 35% of their total daily calories should be consumed from lean proteins.

Example: If you require 2000 calories a day, the calories from fat should be 400-700 calories a day.

Convert calories to grams: Most fats have 9 concentrated calories per gram of fat.

Therefore, 400-700 calories / 9 = 44-78 grams of fat in a day.

3. Calculate Carbohydrate Intake

45-65% of total calories

Example: Let’s say your daily requirement is 2000 calories; your carbohydrate ratio should be in the range of 900 – 1,300 calories from carbohydrates.

Convert calories to grams: Carbohydrates provide the energy that is received in the caloric value of 4 calories per gram.

Therefore, food of 900-1300 calories / 4 = 225-325 grams of carbohydrate per day.

4. Recommended Water Intake

It is worth mentioning that 1 kilocalorie of energy is equivalent to 1 millilitre.

Example: For example, if you require 2000 calories every day, it indicates that you should consume water, 2000 millilitres in a day which is equal to 2 liters.

5. Calculate Fiber Intake

Fiber = (kcal / 1000) seven hundred and fourteen

Example: If you are for instance in a 2000-calorie diet then your intake of fiber should be:

Out of the nutritive value, 2000 micrograms is equivalent to 1000 grams hence (2000/1000) x 14 = 28 grams of fiber per day.

Steps to Calculate Your dietary reference intake (DRI)

  • Determine Your DRI Category
  • Identify your sex (male or female).
  • Identify your age group.
  • Specify if you are pregnant or lactating.
  • Calculate Your Daily Caloric Needs

Use a caloric needs calculator or a simple formula based on your activity level.

Breakdown of Nutrient Intake Based on Caloric Needs

Protein: 10-30% of total calories.

Fats: 20-35% of total calories.

Carbohydrates: 45-65% of total calories.

Water: 1 mL per calorie consumed.

Fiber: (Total calories / 1000) × 14 grams 


All in all, it can be safe to conclude that paying attention to daily intake of protein and ensuring that one gets adequate amounts of protein will greatly be of benefit to his or her body growth and overall health. Thus, one can estimate the protein needed by their weight and other conditions such as pregnancy to avoid shortages. But it is really important to stick to a diet plan and should consult a doctor for a better diet plan. Protein, in conjunction with other macronutrients, should be consumed in large amounts for proper growth, development, and healthy living for the active lifestyle.

Daily nutrition needs refer to the specific amounts of nutrients, including proteins, fats, carbohydrates, vitamins, minerals, and water, that an individual requires each day to maintain optimal health and well-being.

You can calculate your daily nutrition needs by considering factors such as your age, sex, activity level, and any special circumstances like pregnancy or lactation. Use tools like DRI calculators or follow simple guidelines based on percentages of total caloric intake.