TDEE Calculator
Calculate your Total Daily Energy Expenditure based on your activity level.
Complete Guide to Total Daily Energy Expenditure (TDEE)
If you want to master your body weight—whether you're looking to shed fat, build muscle, or simply maintain your current physique—knowing your TDEE is the crucial first step. Our TDEE Calculator estimates your Total Daily Energy Expenditure: the total number of calories your body burns in a 24-hour period.
What Makes Up Your TDEE?
Your Total Daily Energy Expenditure is not just a single number; it is composed of four distinct biological processes:
- BMR (Basal Metabolic Rate): ~70% of TDEE
This is the energy your body needs just to stay alive at rest (breathing, pumping blood, organ function). - NEAT (Non-Exercise Activity Thermogenesis): ~15% of TDEE
The calories burned through daily unconscious movements like fidgeting, walking to your car, typing, and doing chores. NEAT varies massively between individuals. - TEF (Thermic Effect of Food): ~10% of TDEE
Your body burns calories just to digest the food you eat. Protein requires the most energy to digest, which is why high-protein diets naturally boost your metabolism slightly. - EAT (Exercise Activity Thermogenesis): ~5% of TDEE
The calories burned during deliberate, planned exercise (like running, weightlifting, or cycling).
How to Use Your TDEE Results
Once the calculator provides your TDEE, you have the baseline number needed to dictate your nutritional strategy:
- To Lose Weight (Cutting): You must eat fewer calories than your TDEE. A standard, sustainable deficit is subtracting 500 calories from your TDEE per day, which equates to about 1 pound of fat loss per week.
- To Gain Muscle (Bulking): You must eat slightly more calories than your TDEE while resistance training. Adding 250-500 extra calories per day puts you in a surplus, providing the energy needed to synthesize new muscle tissue.
- To Maintain Weight: Simply consume the exact number of calories as your TDEE.
Why is Activity Level So Important?
When using the calculator, selecting the correct activity level multiplier is critical. Be honest with yourself. If you sit at a desk for 8 hours a day but go to the gym for 45 minutes, you are generally considered "Lightly Active," not "Highly Active." Overestimating your activity level will give you an artificially high TDEE, causing you to eat too much and plateau on your weight loss journey.
Frequently Asked Questions
1. Does TDEE change every day?
Yes. If you sit on the couch all Sunday, your TDEE for that day will be much lower than on a Wednesday when you ran 3 miles. However, the calculator gives you an average daily number over the course of a week to make meal planning easier.
2. Why did my TDEE drop after I lost weight?
A smaller body requires less energy to move around and maintain itself. As you lose significant weight, your BMR decreases. You must recalculate your TDEE periodically (e.g., every 10 lbs lost) to adjust your caloric intake.