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DRI Calculator for Healthcare Professionals
Dietary Reference Intakes — calories, macros, vitamins, and minerals — for a patient profile.
Results
- Estimated energy need
- 2,250 kcal
- BMI
- 24.2 (healthy)
- Protein RDA
- 56 g
| Nutrient | Amount |
|---|---|
| Protein | 56 g |
| Water | 2.7 L |
| Fiber | 25 g |
| Vitamin A | 700 µg |
| Vitamin C | 75 mg |
| Vitamin D | 15 µg |
| Vitamin E | 15 mg |
| Vitamin K | 90 µg |
| Thiamin (B1) | 1.1 mg |
| Riboflavin (B2) | 1.1 mg |
| Niacin (B3) | 14 mg |
| Vitamin B6 | 1.3 mg |
| Folate | 400 µg |
| Vitamin B12 | 2.4 µg |
| Calcium | 1000 mg |
| Iron | 18 mg |
| Magnesium | 310 mg |
| Zinc | 8 mg |
| Potassium | 2600 mg |
| Sodium | 1500 mg |
Values from the National Academies of Sciences, Engineering and Medicine. A representative subset for planning.
A DRI calculator returns the Dietary Reference Intakes — including the Recommended Dietary Allowance (RDA) — for energy, macronutrients, vitamins, and minerals. The National Academies of Sciences, Engineering and Medicine set these values.
Enter a patient profile for estimated energy needs, BMI, and a reference nutrient table.
How to use Dietary Reference Intakes
To use Dietary Reference Intakes, compare a patient's usual intake against the RDA or Adequate Intake for their age and sex. Energy needs come from BMR times an activity factor.
Worked example: an 80 kg adult has a protein RDA of 0.8 × 80 = 64 g per day.
Frequently asked questions
DRIs are the reference nutrient values — RDA, Adequate Intake, and Tolerable Upper Intake — set by the National Academies for healthy people.
The Recommended Dietary Allowance for protein is 0.8 g per kg of body weight per day for healthy adults; athletes need more.
Yes. Pregnancy adds about 340 calories per day in the second trimester and 450 in the third; lactation adds 450–500.
Results are estimates based on population averages and are not medical advice. Consult a doctor or registered dietitian nutritionist (RDN) before making large changes to your diet, especially for deficits over 2 lb (0.9 kg) per week, during pregnancy or nursing, or for anyone under 18.