Premium BMR & TDEE Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE).
BMR
TDEE
What do the results mean?
BMR is the calories your body needs at rest. TDEE estimates your total daily calorie needs based on activity level.
🔥 Online BMR & TDEE Calculator
Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure. Understand your body’s calorie needs for better health and fitness planning.
Use the online BMR calculator above to instantly estimate your Basal Metabolic Rate and Total Daily Energy Expenditure. Enter your gender, age, height, weight, and activity level to see your personalized calorie needs.
Below you will find a complete guide on how this BMR calculator works, what BMR and TDEE mean, and how to use your results for better nutrition and fitness planning.
How to Use the BMR & TDEE Calculator
- Select Your Gender — Choose male or female.
- Enter Your Age — In years.
- Enter Your Height — In centimeters or feet/inches.
- Enter Your Weight — In kilograms or pounds.
- Choose Your Activity Level — From sedentary to athlete.
- Click Calculate — Instantly see your BMR, TDEE, and daily calorie needs.
Activity Level Descriptions
| Activity Level | Description | Multiplier |
|---|---|---|
| Sedentary | Little or no exercise, desk job | 1.2 × BMR |
| Light Exercise | Exercise 1–3 days per week | 1.375 × BMR |
| Moderate Exercise | Exercise 3–5 days per week | 1.55 × BMR |
| Very Active | Exercise 6–7 days per week | 1.725 × BMR |
| Athlete | Intense daily training or physical job | 1.9 × BMR |
What Is BMR?
BMR (Basal Metabolic Rate) is the amount of energy your body needs to perform basic life-sustaining functions while at rest. These functions include:
- Breathing
- Blood circulation
- Body temperature regulation
- Cell production and repair
- Brain and nervous system function
- Digestion
Your BMR accounts for about 60-75% of your total daily calorie expenditure. It is the minimum number of calories your body needs just to survive at complete rest.
What Is TDEE?
TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including exercise and daily activities. It takes your BMR and adds the calories burned through:
- Physical activity — Exercise, walking, standing, moving
- NEAT — Non-Exercise Activity Thermogenesis (daily movements like fidgeting, cleaning)
- TEF — Thermic Effect of Food (calories burned digesting and processing food)
Your TDEE is your true maintenance calorie level — the number of calories you need to eat each day to maintain your current weight.
The Formula Behind This Calculator
This calculator uses the Mifflin-St Jeor Equation, widely considered one of the most reliable methods for estimating BMR:
For Women: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Then: TDEE = BMR × Activity Level Multiplier
Example — 30-year-old woman, 65 kg, 165 cm, moderately active:
- BMR = (10 × 65) + (6.25 × 165) − (5 × 30) − 161
- BMR = 650 + 1,031.25 − 150 − 161
- BMR = 1,370 calories/day
- TDEE = 1,370 × 1.55 = 2,124 calories/day
Why Is My BMR Important?
Knowing your BMR helps you understand the minimum calories your body requires to function properly. It serves as the foundation for all nutrition planning:
- Weight loss: Eat below your TDEE but above your BMR for safe, sustainable weight loss
- Weight maintenance: Eat at your TDEE
- Weight gain: Eat above your TDEE
Why Do Activity Levels Affect TDEE?
More physical activity increases the number of calories your body burns, resulting in a higher TDEE value. This is why two people with the same BMR can have very different daily calorie needs — the more active person burns significantly more calories.
For example:
- Sedentary person with BMR of 1,500: TDEE ≈ 1,800 calories
- Athlete with same BMR of 1,500: TDEE ≈ 2,850 calories
That is a difference of over 1,000 calories per day — just from activity level!
Is This Calculator Accurate?
This calculator uses the widely accepted Mifflin-St Jeor Equation, which is considered one of the most reliable methods for estimating BMR. Studies have shown it to be accurate for most of the general population.
However, individual factors such as body composition, genetics, and health conditions can affect your actual metabolic rate. The results are estimates and should be used as a starting point for your nutrition planning.
Understanding BMR and Daily Calorie Needs
🔬 How Your Body Uses Energy
| Component | Percentage of TDEE | Description |
|---|---|---|
| BMR | 60-75% | Basic life functions at rest |
| NEAT | 15-30% | Daily movements and activities |
| TEF | 5-10% | Digesting and processing food |
| Exercise | 5-10% | Planned physical activity |
Your body burns calories even when you are resting. These calories are used to support essential bodily functions such as breathing, blood circulation, cell production, and temperature regulation.
The Basal Metabolic Rate (BMR) provides an estimate of these calories. However, most people are active throughout the day, which means they burn additional calories through walking, exercising, working, and other activities.
The Total Daily Energy Expenditure (TDEE) takes your activity level into account and provides a more realistic estimate of your daily calorie needs.
By understanding both BMR and TDEE, you can make more informed decisions about nutrition, fitness, and overall health.
Real BMR & TDEE Examples
| Profile | Age | Weight | Height | Activity | BMR | TDEE |
|---|---|---|---|---|---|---|
| Sedentary Woman | 30 | 65 kg | 165 cm | Sedentary | 1,370 | 1,644 |
| Active Man | 28 | 80 kg | 180 cm | Moderate | 1,775 | 2,751 |
| Fitness Woman | 35 | 70 kg | 170 cm | Very Active | 1,474 | 2,543 |
| Athlete Man | 25 | 85 kg | 185 cm | Athlete | 1,925 | 3,658 |
Frequently Asked Questions
What is BMR?
BMR (Basal Metabolic Rate) is the amount of energy your body needs to perform basic life-sustaining functions while at rest, such as breathing, circulation, and temperature regulation.
What is TDEE?
TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including exercise and daily activities. It is your actual maintenance calorie level.
Why is my BMR important?
Knowing your BMR helps you understand the minimum calories your body requires to function properly. It serves as the foundation for all nutrition and weight management planning.
Why do activity levels affect TDEE?
More physical activity increases the number of calories your body burns, resulting in a higher TDEE value. Two people with the same BMR can have very different TDEE based on activity.
Is this calculator accurate?
This calculator uses the widely accepted Mifflin-St Jeor Equation, which is considered one of the most reliable methods for estimating BMR. Results are estimates for planning purposes.
External Resources
- What Is Basal Metabolic Rate (BMR)? — Medical News Today
Learn what BMR means and why it is important for understanding your body’s energy needs. - How BMR Is Calculated — Calculator.net
Discover how BMR is calculated using scientifically recognized formulas. - What Is TDEE? — Verywell Fit
Understand Total Daily Energy Expenditure (TDEE) and how it affects your calorie requirements. - How Many Calories Do You Need Per Day? — Healthline
Find out how many calories you may need each day based on your age, weight, height, and activity level.