TDEE Daily Total Energy Expenditure Calculator
Enter gender, age, height, weight, activity level and goal to compute BMR (Mifflin-St Jeor), TDEE and your target daily calories with protein/carb/fat grams — sedentary ×1.2 up to very active ×1.9.
Estimates only — calorie needs vary. For structured fat loss or muscle gain, consult a doctor or dietitian.
Your BMR, TDEE and macro breakdown will appear here.
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What is it
Your TDEE (total daily energy expenditure) is how many kcal you actually burn per day: resting metabolism (BMR) multiplied by your activity factor. It is the starting point for any realistic eating plan — maintain at TDEE, cut ~15% to lose, add ~10% to gain.
Notes & fun facts
People who guess their daily calories usually miss by hundreds — plugging real height, weight and activity into the Mifflin-St Jeor formula gives a number you can actually plan meals around.
Origin & history
Total daily energy expenditure (TDEE) is the sum of resting metabolism and activity costs — how much energy a person actually burns in a day. Since the 19th century, researchers have applied thermodynamic methods to measure human energy metabolism, turning the question of how much energy the body uses per day from guesswork into a measurable science; modern practice estimates it from a resting-metabolism formula multiplied by an activity factor.
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