Understanding This Calculator
TDEE is your BMR multiplied by an activity factor that accounts for exercise, daily movement, and the thermic effect of food — it represents the total calories you burn (and therefore need to eat to maintain weight) in an average day.
This is the number to use for setting calorie targets: eat below it for weight loss, at it for maintenance, above it for weight gain. The activity multipliers below follow the widely used Harris-Benedict/Katch activity scale.
- BMR Mifflin-St Jeor basal metabolic rate
- multiplier 1.2 (sedentary) to 1.9 (extremely active)
| Level | Multiplier | Description |
|---|---|---|
| Sedentary | 1.2 | Desk job, little exercise |
| Light | 1.375 | Light exercise 1-3 days/wk |
| Moderate | 1.55 | Moderate exercise 3-5 days/wk |
| Very Active | 1.725 | Hard exercise 6-7 days/wk |
| Extremely Active | 1.9 | Athlete, physical job + training |
Frequently Asked Questions
Should I recalculate TDEE as I lose weight?
Yes — TDEE drops as body weight decreases (a lighter body burns fewer calories), so recalculating every 10-15 lb of change keeps your calorie target accurate.
Why is my activity level hard to estimate honestly?
Most people overestimate their activity level — if progress stalls at your calculated calorie target, try the next lower activity tier before assuming the formula is wrong.
What is the Total Daily Energy Expenditure Calculator?
The Total Daily Energy Expenditure (TDEE) Calculator is an essential tool designed to help you determine the exact number of calories your body burns in a single day. By considering various factors such as your age, gender, height, weight, and overall physical activity level, this calculator provides a comprehensive estimate of your daily caloric needs. Understanding your TDEE is fundamental whether you are looking to lose weight, build muscle, or simply maintain your current physique, as it serves as the baseline for structuring your dietary intake.
This calculator is perfect for fitness enthusiasts, athletes, dietitians, and anyone interested in taking control of their health and nutrition. By providing a clear target for daily calorie consumption, it takes the guesswork out of meal planning. Whether you have a sedentary lifestyle or engage in intense physical training, the TDEE Calculator customizes its output to match your specific metabolic demands, empowering you to make informed decisions about your diet and reach your fitness goals more effectively.
How to Calculate Total Daily Energy Expenditure (The Formula)
The calculation of Total Daily Energy Expenditure involves first determining your Basal Metabolic Rate (BMR) and then multiplying it by an Activity Multiplier. The most common formula for BMR is the Mifflin-St Jeor equation. 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. Once the BMR is calculated, it is multiplied by an activity factor ranging from 1.2 for sedentary individuals to 1.9 for highly active individuals to find the final TDEE.
Frequently Asked Questions
What is the difference between BMR and TDEE?
Basal Metabolic Rate (BMR) represents the number of calories your body needs to perform basic life-sustaining functions while at rest, such as breathing and circulation. Total Daily Energy Expenditure (TDEE) includes your BMR plus the additional calories you burn through daily activities and exercise.
How often should I recalculate my TDEE?
You should recalculate your TDEE whenever you experience significant weight loss or weight gain, or if your daily activity levels change substantially. Updating your TDEE ensures your calorie targets remain accurate for your current body composition and lifestyle.
Can I use TDEE to lose weight?
Yes, understanding your TDEE is key to weight loss. To lose weight, you need to consume fewer calories than your TDEE, creating a caloric deficit. A common recommendation is a deficit of 300 to 500 calories per day for sustainable and healthy weight loss.