Daily energy needs explained

Direct answer: Your body uses energy, measured in kcal, even at complete rest. This resting use is called basal metabolic rate (BMR). Moving, working and exercising add to it. ICMR-NIN says energy requirement depends on body weight and physical activity, so the calculator shows ICMR-NIN's reference diets instead of a personal calorie number.

Consult a doctor or dietitian: these are general references for adults. They are not a plan for pregnancy, breastfeeding, children, illness or any medical condition.

What reference diets does ICMR-NIN give?

For a 65kg man, about 2080 kcal a day if sedentary and about 2680 kcal if moderately active. For a 55kg woman, about 1660 and 2125 kcal. For adults over 60, about 1740 kcal for men and 1530 kcal for women. These diets are for adults with a BMI of 18.5 to 23.

Why no personal calorie number?

Equations only estimate averages, and your body, health and real activity differ. ICMR-NIN notes that cereal and pulse amounts go up or down with body weight and activity, so these reference diets are a starting point. A dietitian can tailor them to you.

FAQ

Should I eat exactly this?

No. Use it as a reference, and ask a dietitian for a personal figure.

Where do the numbers come from?

ICMR-NIN's Dietary Guidelines for Indians 2024, Table 1.6.

Further reading

• Energy balance explained
• Calories and energy from food

Sources

• ICMR-NIN Expert Committee, Dietary Guidelines for Indians-2024 (DGI 2024), nin.res.in/dietaryguidelines/pdfjs/locale/DGI_2024.pdf, Table 1.6 suggested food groups and energy by body weight, PDF p. 28 / printed p. 11; energy depends on body weight and activity, Figure 9.1 notes, PDF p. 80 / printed p. 63