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Total Daily Energy Expenditure

TDEE Calculator

Your complete daily calorie burn -- BMR plus all activity. The single most important number for reaching any body composition goal.

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TDEE = BMR x Activity Multiplier
Using the Mifflin-St Jeor equation (most accurate for adults) with validated Harris-Benedict activity factors

Your Stats

Sedentary
Desk job, little or no exercise
x1.2
Lightly Active
1-3 workouts per week
x1.375
Moderately Active
3-5 workouts per week
x1.55
Very Active
6-7 hard workouts per week
x1.725
Extra Active
Physical job + daily training
x1.9
Your TDEE
--
calories per day
--
BMR
x
--
Activity
=
--
TDEE
--
Fat Loss
-500 cal/day
--
Maintain
Your TDEE
--
Muscle Gain
+250 cal/day
Learn

What is TDEE?

Total Daily Energy Expenditure is the total calories your body burns in a 24-hour period. It is the single most important number for any nutrition plan.

BMR: The Foundation (60-75%)

Your Basal Metabolic Rate is the energy your body uses just to stay alive -- breathing, circulating blood, brain function. This is the largest portion of your daily burn.

Exercise Activity (15-30%)

Planned physical activity like gym workouts, running, swimming, or sports. This is the most variable component and the one you have the most control over.

TEF: Thermic Effect of Food (5-10%)

The energy your body uses to digest, absorb, and process nutrients. Protein has the highest thermic effect (20-30%), followed by carbs (5-10%), then fat (0-3%).

NEAT: Non-Exercise Activity (10-15%)

All movement that is not planned exercise -- fidgeting, walking around the house, typing, cooking. NEAT can vary by up to 2,000 calories per day between individuals.

Read: The Truth About Calories In vs. Calories Out

How TDEE is Calculated

TDEE stands for Total Daily Energy Expenditure. It represents the complete picture of your daily calorie burn -- not just what you burn at rest (BMR), but everything: exercise, digestion, fidgeting, walking, thinking. Your TDEE is the number that determines whether you gain, lose, or maintain weight.

Activity Level Multipliers (Harris-Benedict)

We use the Harris-Benedict activity factors, which have been validated in metabolic ward studies since 1919 and refined over decades of research:

Why TDEE Matters More Than BMR

BMR tells you what your body burns doing nothing. But nobody does nothing. TDEE gives you the actionable number -- the calorie target that actually determines your body composition. Eat below your TDEE to lose fat. Eat above it to build muscle. Match it to maintain. The math is straightforward, even if the execution requires discipline.

Common TDEE Mistakes

The biggest mistake is overestimating activity level. Most people who exercise 3-4 times per week should select "Moderately Active," not "Very Active." If you are not losing weight at your calculated deficit, try dropping one activity level. The second mistake is not adjusting TDEE as body weight changes -- recalculate every 5-10 pounds.

Related Tools

Complete Your Nutrition Picture

TDEE is just the starting point. Use these calculators to build your complete plan.

BMR Calculator

Your basal metabolic rate -- the calories your body burns at rest. The foundation of TDEE.

Macro Calculator

Once you know your TDEE, split it into the optimal protein, carb, and fat ratios for your goal.

Calorie Deficit

Calculate the right deficit for safe, sustainable fat loss with a projected weight loss timeline.

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