Guide
About the Daily Nutrient Requirements for Indians
What are daily nutrient requirements?
Daily nutrient requirements are the amounts of energy, protein, vitamins and minerals that a healthy person needs each day to stay well. The Indian Council of Medical Research–National Institute of Nutrition (ICMR-NIN) sets these values for Indians using local food habits and body sizes.
The main value shown is the Recommended Dietary Allowance (RDA). This is the intake that meets the needs of nearly all healthy people in a given age, sex and activity group. Most individuals need less than the RDA. The Estimated Average Requirement (EAR) is the median need; the RDA adds a safety margin.
Upper limits (Tolerable Upper Limits) are the highest daily intake from all sources, including supplements, that is unlikely to cause harm. They are not targets to aim for. Requirements change with age, sex, body weight, physical activity, pregnancy and lactation. This tool uses the ICMR-NIN 2020 values for Indians.
- RDA meets needs of nearly all healthy people in a group
- EAR is the average need; RDA adds a safety margin
- Upper limits are safety ceilings, not goals
- Values differ by age, sex, weight, activity, pregnancy and lactation
How the calculator works
You enter your age, sex, body weight and usual physical activity level. The tool looks up the ICMR-NIN reference values for your group. Energy is shown as the estimated average requirement for the reference body weight (65 kg for men, 55 kg for women) at your activity level. Protein can also be scaled to your own weight at 0.83 g per kg per day. All other nutrients (fibre, calcium, iron, zinc, iodine, vitamins) are shown as the RDA for your age and sex group. Upper limits are shown where ICMR-NIN defines them. The calculation happens on your device; no data is sent anywhere.
- Age, sex, weight and activity level are required
- Energy based on reference weight and activity level
- Protein also scaled to your weight at 0.83 g/kg/day
- Other nutrients shown as RDA for your age and sex
- Upper limits shown where defined
- Runs entirely on your device
How to use the calculator
Have your current weight in kilograms ready. Choose the activity level that matches your usual work or daily routine: sedentary (desk job, little exercise), moderate (standing work, regular walking) or heavy (manual labour, intense daily exercise). Enter the values and press Calculate. The results appear below the form. You can change any field and recalculate. To keep the numbers, take a screenshot or write them down; refreshing the page clears the entries.
- Know your current weight in kg
- Pick sedentary, moderate or heavy activity
- Enter age, sex, weight and activity
- Press Calculate to see results
- Change any field and recalculate
- Screenshot or note the numbers; refresh clears them
Understanding your results
The result table shows daily values for energy (kcal), protein (g), fibre (g), calcium (mg), iron (mg), zinc (mg), iodine (µg) and key vitamins. Energy is the estimated average requirement for the reference weight at your activity level. Protein shows both the RDA for your group and the value scaled to your weight. Other nutrients are the RDA for your age and sex. Upper limits are shown where ICMR-NIN provides them. These are estimates for healthy people. They are not a prescription. Use them to plan balanced meals and to discuss your diet with a doctor or dietitian. Compare results over time only if you use the same method and the same tool.
- Energy: estimated average requirement for reference weight
- Protein: RDA for group and weight-scaled value
- Other nutrients: RDA for your age and sex
- Upper limits: safety ceilings, not targets
- Not a prescription; discuss with a doctor or dietitian
- Compare over time only with same method
Tips for accurate entries and better use
Weigh yourself in the morning after using the toilet and before eating. Use the same scale each time. Choose the activity level that matches most days, not your busiest or lightest day. If your weight changes by more than 2–3 kg, recalculate. Keep a simple food diary for a few days and compare your usual intake with the numbers; this helps at your next doctor or dietitian visit. Remember that food sources matter: iron from plants is absorbed less well than iron from meat, so vegetarians may need more iron-rich foods or a doctor’s advice on supplements.
- Weigh in the morning on the same scale
- Pick the activity level of most days
- Recalculate if weight changes by 2–3 kg
- Keep a short food diary to compare intake
- Vegetarians may need more iron-rich foods
- Discuss gaps with a doctor or dietitian
What this tool cannot tell you
This tool gives general estimates for healthy people based on ICMR-NIN population guidelines. It does not account for medical conditions that change nutrient needs, such as kidney disease, anaemia, malabsorption, thyroid disorders, or recovery from surgery or illness. It does not adjust for medications that affect nutrient use. It does not give meal plans, portion sizes or food lists. It does not replace a clinical assessment, blood tests or a personalised diet prescription from a qualified doctor or dietitian. Upper limits are for total intake from food plus supplements; do not use them as daily goals.
- Not for medical conditions that alter needs
- Does not adjust for medications
- No meal plans, portions or food lists
- Does not replace clinical assessment or blood tests
- Upper limits are ceilings, not targets
When to see a doctor or dietitian
See a doctor or dietitian if you have a diagnosed condition (diabetes, kidney disease, heart disease, anaemia, thyroid disorder, gastrointestinal disease), are pregnant or breastfeeding, have had recent surgery, are losing weight without trying, feel weak or tired often, or want a personalised meal plan. Seek urgent care if you have severe breathlessness, chest pain, fainting, confusion, or signs of severe dehydration (very dry mouth, little urine, dizziness). These are not caused by nutrient numbers alone but need immediate medical attention.
- Diagnosed condition that affects nutrition
- Pregnant or breastfeeding
- Recent surgery or illness
- Unexplained weight loss or persistent weakness
- Want a personalised meal plan
- Urgent: severe breathlessness, chest pain, fainting, confusion, severe dehydration
In an emergency, call 7414 001 001 or go to the emergency department.
Care at Jaipur Hospital
If your result or your symptoms worry you, our General Medicine team can see you in Jaipur. You can also find a doctor or contact the hospital. Nothing you entered in this tool is shared through these links.
Common questions about the Daily Nutrient Requirements for Indians
Is the protein value the same for everyone of my age and sex?
The tool shows two protein numbers.
One is the RDA for your age and sex group. The other is scaled to your actual body weight at 0.83 g per kg per day. If your weight differs from the reference weight (65 kg for men, 55 kg for women), the weight-scaled value will differ from the group RDA.
Why is the energy value based on a reference weight and not my actual weight?
ICMR-NIN provides estimated average energy requirements for a reference man of 65 kg and a reference woman of 55 kg at each activity level.
The tool uses these standard values. Your actual energy need may be higher or lower depending on your body size, composition and metabolism. A dietitian can give a more precise estimate.
What does the upper limit mean? Should I try to reach it?
The upper limit (Tolerable Upper Limit) is the highest daily intake from all sources—food, fortified foods and supplements—that is unlikely to cause harm for almost all healthy people.
It is a safety ceiling, not a target. Aim to meet the RDA through a varied diet. Do not take supplements to reach the upper limit without medical advice.
I am vegetarian. Do the iron and zinc values apply to me?
The RDA values assume a mixed diet.
Iron and zinc from plant foods are absorbed less efficiently. ICMR-NIN notes that vegetarians may need higher intakes or careful food combinations. The tool shows the standard RDA. Discuss with a doctor or dietitian whether you need an adjusted target or a supplement.
Can I use this tool for my child or elderly parent?
This tool is for adults aged 18 years and above.
ICMR-NIN has separate tables for infants, children, adolescents and older adults with different reference weights and requirements. Use a tool or guidance specific to that age group, or consult a paediatrician or geriatric specialist.
How often should I recalculate my requirements?
Recalculate if your weight changes by more than 2–3 kg, if your activity level changes (for example, a new job or exercise routine), or if you move into a different life stage such as pregnancy or lactation.
For most stable adults, once a year is enough.
