BMR Calculator & Daily Calorie Needs Calculator

Q: What is Basal Metabolic Rate (BMR)?

Basal Metabolic Rate (BMR) is the number of calories your body needs each day to perform essential functions while at complete rest, such as breathing, maintaining body temperature, blood circulation, and supporting organ function.

Q: What is the difference between BMR and TDEE?

BMR is the number of calories your body burns at complete rest. Total Daily Energy Expenditure (TDEE) includes your BMR plus the calories burned through daily activities, exercise, and digestion. TDEE provides a better estimate of your total daily calorie needs.

Q: How accurate is this BMR calculator?

This calculator uses the Mifflin-St Jeor equation , one of the most widely accepted methods for estimating BMR in healthy adults. While it provides a reliable estimate, actual calorie requirements may vary depending on body composition, health conditions, medications, and lifestyle.

Q: Can I use this calculator for weight loss?

Yes. Your estimated TDEE can help you understand how many calories your body needs each day. For healthy and sustainable weight loss, a moderate calorie deficit combined with balanced nutrition and regular physical activity is generally recommended.

Q: Is there a normal BMR value?

There is no single "normal" BMR because it depends on factors such as age, sex, height, weight, and body composition. Two people of the same age may have different BMR values based on their individual characteristics.

Q: Why does BMR decrease with age?

BMR generally decreases with age because lean muscle mass tends to decline over time, while overall metabolic activity slows. Regular physical activity and strength training can help maintain muscle mass and support healthy metabolism.

Q: Does muscle mass affect BMR?

Yes. Muscle tissue requires more energy than fat tissue, even at rest. Individuals with greater lean muscle mass generally have a higher BMR than those with less muscle mass of the same body weight.

Q: Is this BMR calculator suitable for Indian adults?

Yes. The calculator uses the internationally validated Mifflin-St Jeor equation to estimate BMR. This page also includes information on WHO South Asian BMI recommendations and ICMR guidance to help interpret metabolic health in the Indian context.

Q: Should I eat fewer calories than my BMR?

No. BMR represents the minimum energy your body needs to support essential physiological functions at rest. Calorie planning for weight management should generally be based on your Total Daily Energy Expenditure (TDEE) rather than BMR alone. If you have a medical condition or require significant calorie restriction, seek guidance from a qualified healthcare professional.

Use this BMR Calculator (Basal Metabolic Rate Calculator) to estimate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). This daily calorie needs calculator uses the Mifflin-St Jeor equation to provide an evidence-based estimate based on your age, sex, height, weight, and activity level.

My Basal Metabolic Rate (BMR) Calculator

Gender

Age (years)

Height (cm)

Weight (kg) Activity Level

Disclaimer: This calculator provides general estimates based on predictive equations and BMI classifications for Asian Indian adults aged 18–80 years. Individual calorie needs and health risks may vary depending on body composition, medical conditions, medications, hormonal status, and lifestyle factors. For a personalized assessment, consult a qualified nutrition professional.

Before You Use the BMR Calculator

Quick Measurement Tips

Height: Measure standing barefoot against a wall, keeping posture upright.
Weight: Use a calibrated digital scale in the morning after waking up for consistency.

Choose the Correct Activity Level

Sedentary: Desk job, mostly sitting, minimal daily steps.
Lightly Active: Light walking, light exercise 1–3 days/week.
Moderately Active: regular exercise/sports 3–5 days/week.
Very Active: Hard physical exercise 6–7 days/week.

Developed & Verified by Clinical Experts

Nutritionist Rupali B. Shevade
Postgraduate Nutritionist, Certified Nutrigenomics Consultant & Fitness Coach

Based on Clinical Guidelines: Revised Harris- Benedict, WHO South Asian BMI Cutoffs & ICMR Recommendations
Last updated: July 2026

Why Metabolic Health Assessment Matters for Indian Adults

Understanding your Basal Metabolic Rate (BMR) is an important step in estimating your daily calorie needs. However, BMR is only one part of a complete metabolic health assessment. Body composition, Body Mass Index (BMI), physical activity, age, sex, and overall health all influence your nutritional requirements.
For Indian adults, these factors deserve special attention because metabolic risks may develop at lower BMI values than in many Western populations. This is why population-specific recommendations are commonly used when assessing metabolic health and planning nutrition interventions.

Understanding Your BMR & Daily Calorie Needs

Your body requires energy even when you are completely at rest. Every heartbeat, breath, and essential body function uses calories to keep you alive and healthy. Understanding your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) helps estimate your daily calorie needs and provides a scientific starting point for weight management and nutrition planning.

What Is Basal Metabolic Rate (BMR)?

Basal Metabolic Rate (BMR) is the minimum amount of energy your body needs to perform essential functions while at complete rest. These include breathing, blood circulation, maintaining body temperature, cell repair, and supporting the normal function of your organs.

For most adults, BMR accounts for approximately 60–70% of total daily energy expenditure, although this varies depending on factors such as age, sex, body composition, and muscle mass.

How We Calculate Your BMR (Mifflin-St Jeor Equation)

This calculator estimates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation, one of the most widely accepted and validated predictive equations for estimating resting energy expenditure in healthy adults. The calculation is based on your age, sex, height, and weight.
For Men: BMR = (10 × Weight in kg) + (6.25 × Height in cm) − (5 × Age in years) + 5
For Women: BMR = (10 × Weight in kg) + (6.25 × Height in cm) − (5 × Age in years) − 161

The calculated BMR represents the estimated number of calories your body requires each day to maintain essential physiological functions while at complete rest. Your Total Daily Energy Expenditure (TDEE) is then estimated by applying your selected Physical Activity Level (PAL).

WHO South Asian BMI Cut-offs vs. Western Guidelines

Body Mass Index (BMI) is a simple screening tool used to assess weight status, but the relationship between BMI and metabolic health varies across populations. Research shows that South Asians tend to have a higher percentage of body fat and greater abdominal (visceral) fat at lower BMI values than many Western populations. As a result, the risk of metabolic conditions may begin at lower BMI levels.
For this reason, lower BMI cut-offs are recommended for assessing overweight and obesity in South Asian populations, including Indians.

BMI Category	WHO General Classification	South Asian / Indian Risk Assessment
Underweight	< 18.5 kg/m²	< 18.5 kg/m²
Normal Weight	18.5–24.9 kg/m²	18.5–22.9 kg/m²
Overweight	25.0–29.9 kg/m²	23.0–27.4 kg/m²
Obesity	≥ 30.0 kg/m²	≥ 27.5 kg/m²

South Asian BMI cut-offs are based on the WHO Expert Consultation for Asian populations and the 2024 Asian Indian obesity consensus statement.

Although BMI and BMR measure different aspects of health, interpreting them together provides a more complete understanding of your metabolic health and daily calorie requirements.

Reference
Misra A, Soares MJ, Mohan V, et al. Consensus Statement for Revising the Definition of Obesity and Its Diagnostic Criteria for the Asian Indian Population. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2024. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC11421961/

ICMR Recommendations for Daily Energy Expenditure in India

The Indian Council of Medical Research (ICMR) and the National Institute of Nutrition (NIN) publish evidence-based recommendations for estimating the daily energy needs of Indian adults. These guidelines consider factors such as age, sex, body weight, height, and physical activity level, reflecting the characteristics of the Indian population. Your Basal Metabolic Rate (BMR) represents the energy your body requires at complete rest. To estimate your Total Daily Energy Expenditure (TDEE), BMR is multiplied by a Physical Activity Level (PAL) factor that reflects your daily routine and exercise habits.

TDEE = BMR × Physical Activity Level (PAL)

The results from this calculator provide a personalized estimate of your daily calorie requirements. Individual energy needs may vary depending on body composition, health conditions, medications, and lifestyle factors. For people with obesity, chronic diseases, pregnancy, or specific nutrition goals, a professional assessment is recommended.

Reference
Indian Council of Medical Research (ICMR) & National Institute of Nutrition (NIN). Dietary Guidelines for Indians and Recommended Dietary Allowances (RDA) / Estimated Average Requirements (EAR). 2024.

Using Your BMR & TDEE for Weight Management

Your BMR and TDEE estimates provide a scientific starting point for planning your calorie intake. These values should be combined with balanced nutrition, regular physical activity, and individual health considerations to support healthy weight management.

Using Your BMR & TDEE for Weight Loss

For weight loss, your daily calorie intake is generally planned below your estimated TDEE, creating a moderate calorie deficit while still meeting your body’s nutritional needs. The goal should be gradual, sustainable weight loss rather than extreme calorie restriction.
If you are looking for a structured, evidence-based approach, learn more about our Weight Loss Nutrition Program.

Using Your BMR & TDEE for Healthy Weight Gain

For healthy weight gain, your daily calorie intake is generally planned above your estimated TDEE, with an emphasis on nutrient-dense foods, adequate protein intake, and strength training where appropriate. The focus should be on supporting lean muscle gain and overall health rather than simply increasing calorie intake.
Learn more about our Weight Gain Nutrition Program.

Frequently Asked Questions About the BMR Calculator

Basal Metabolic Rate (BMR) is the number of calories your body needs each day to perform essential functions while at complete rest, such as breathing, maintaining body temperature, blood circulation, and supporting organ function.

BMR is the number of calories your body burns at complete rest. Total Daily Energy Expenditure (TDEE) includes your BMR plus the calories burned through daily activities, exercise, and digestion. TDEE provides a better estimate of your total daily calorie needs.

This calculator uses the Mifflin-St Jeor equation, one of the most widely accepted methods for estimating BMR in healthy adults. While it provides a reliable estimate, actual calorie requirements may vary depending on body composition, health conditions, medications, and lifestyle.

Yes. Your estimated TDEE can help you understand how many calories your body needs each day. For healthy and sustainable weight loss, a moderate calorie deficit combined with balanced nutrition and regular physical activity is generally recommended.

There is no single “normal” BMR because it depends on factors such as age, sex, height, weight, and body composition. Two people of the same age may have different BMR values based on their individual characteristics.

BMR generally decreases with age because lean muscle mass tends to decline over time, while overall metabolic activity slows. Regular physical activity and strength training can help maintain muscle mass and support healthy metabolism.

Yes. Muscle tissue requires more energy than fat tissue, even at rest. Individuals with greater lean muscle mass generally have a higher BMR than those with less muscle mass of the same body weight.

Yes. The calculator uses the internationally validated Mifflin-St Jeor equation to estimate BMR. This page also includes information on WHO South Asian BMI recommendations and ICMR guidance to help interpret metabolic health in the Indian context.

No. BMR represents the minimum energy your body needs to support essential physiological functions at rest. Calorie planning for weight management should generally be based on your Total Daily Energy Expenditure (TDEE) rather than BMR alone. If you have a medical condition or require significant calorie restriction, seek guidance from a qualified healthcare professional.