TDEE Calculator
Calculate your Total Daily Energy Expenditure — the number of calories you burn each day including movement, exercise, and all daily activities.
How to use this tdee calculator
- 1Enter your stats accurately — weight especially changes TDEE significantly.
- 2Choose the activity level matching your typical week, not your best or aspirational week.
- 3Most office workers should use Sedentary (1.2) or Light (1.375) — not Moderate.
- 4Eat at TDEE to maintain weight. Eat 500 below to lose 1 lb/week. Eat 300 above for slow lean mass gain.
- 5Recalculate TDEE every 10–15 lbs of weight change as TDEE scales with body weight.
How it's calculated
TDEE = BMR × activity factor (1.2 sedentary to 1.9 very active). Mifflin-St Jeor BMR used.
About the TDEE Calculator
TDEE is the single most important number in nutrition planning — more useful than BMI, more actionable than body fat percentage, and more relevant to daily decisions than any other metabolic metric. If you eat at TDEE, weight stays constant. Every dietary decision is essentially a statement about whether you want to be above, at, or below this number.
The practical challenge with TDEE is that it is an estimate, not a measurement. The most reliable way to find your actual TDEE is to track food intake and body weight meticulously for 2–4 weeks: if weight stayed constant, average daily intake equals TDEE. If weight changed, adjust by 3,500 calories per pound gained or lost. This empirical approach eliminates formula estimation error entirely.
One underappreciated feature of TDEE is how much it can change with deliberate lifestyle modifications. Adding 10,000 steps per day to a sedentary lifestyle can increase TDEE by 200–400 calories without formal exercise — through the NEAT pathway. Strength training builds muscle, which increases resting metabolic rate modestly — each pound of muscle adds approximately 6 calories per day to BMR. Over years of consistent training, accumulated muscle mass can meaningfully elevate TDEE, making weight maintenance easier.
For weight loss planning, TDEE provides the context to evaluate whether a calorie target is physiologically reasonable. A 2,000 calorie diet is a meaningful deficit for a 6 ft 2 in active man with TDEE of 3,000, but barely below maintenance for a sedentary 5 ft 3 in woman with TDEE of 1,800. The same absolute number means something completely different depending on individual TDEE.
Frequently asked questions
What activity level should I choose?
Most people significantly overestimate their activity level, leading to overestimating calorie needs. A practical guide: Sedentary (1.2) — desk job, car commute, minimal intentional exercise. Light (1.375) — desk job plus 20–30 minutes of walking or light exercise 1–3 times per week. Moderate (1.55) — desk job plus 45–60 minutes of genuine effort exercise 3–5 times per week. Active (1.725) — physically demanding job or serious exercise 6–7 times per week. Very Active (1.9) — twice-daily training or extremely demanding physical labor. When in doubt, choose lower and adjust based on actual weight trends over 2–4 weeks.
What is the difference between TDEE and maintenance calories?
They are the same thing. TDEE is the scientific term for total metabolic rate including all activity. Maintenance calories is the practical term for how much you can eat while maintaining current weight. Both refer to the equilibrium point where calorie intake exactly meets calorie expenditure. Eating below TDEE creates a deficit (weight loss); eating above creates a surplus (weight gain or muscle building).
Why does my TDEE seem too high or too low?
If the TDEE estimate does not match your actual experience, the most likely cause is activity level estimation error — most people overestimate. Try dropping to the next lower activity factor and tracking actual intake for 2 weeks. If the discrepancy is large (500+ calories), consider metabolic testing. Individual BMR variation from the Mifflin-St Jeor formula is approximately ±10% — at a 2,000 calorie TDEE, your true TDEE could range from 1,800 to 2,200. Track real food intake and real weight trends to calibrate your personal TDEE empirically.
Does exercise increase TDEE as much as people think?
Exercise increases TDEE, but often less than expected due to compensatory mechanisms. People unconsciously reduce non-exercise movement (NEAT) after exercise — sitting more, fidgeting less. Research shows NEAT compensation can offset 20–50% of exercise-burned calories. Additionally, increased appetite often follows increased exercise for cardio. This does not mean exercise is unimportant — the health benefits extend far beyond calorie burning — but it explains why exercise alone rarely produces dramatic weight loss without dietary management.