Disclaimer: This calculator provides general health information and estimates for educational purposes only. It is not medical advice, a diagnosis, or a treatment recommendation, and it is not a substitute for care from a licensed healthcare provider. Results are based on population formulas and may not reflect your individual health status, medications, or medical conditions. Never use this tool to start, stop, or adjust any medication, treatment, diet, or exercise program without professional guidance. Any drug-dosing results are teaching aids only and must be independently verified against drug-specific protocols and confirmed by a licensed clinician or pharmacist before use. Always consult a physician, pharmacist, or registered dietitian for guidance specific to your situation.
Frequently Asked Questions
Q
What is TDEE (Total Daily Energy Expenditure)?
TDEE is the total number of calories you burn per day, including BMR (calories at rest), physical activity, and digestion. It's your maintenance calories - eat this amount to maintain weight. Example: 30-year-old male, 180 lbs, moderately active has TDEE of ~2,700 calories/day.
BMR (60-70% of TDEE): Calories burned just existing (breathing, circulation)
Physical Activity (15-30%): Exercise + daily movement (walking, stairs)
TEF (10%): Thermic Effect of Food (energy to digest food)
TDEE varies based on age, sex, weight, height, and activity level. It changes as your weight changes - recalculate every 10-15 lbs lost or gained. Your TDEE is roughly your "maintenance calories" where you neither gain nor lose weight.
Q
How is TDEE calculated?
TDEE = BMR × Activity Multiplier. First, calculate BMR using Mifflin-St Jeor equation (most accurate). Then multiply by activity factor: Sedentary (1.2), Light activity (1.375), Moderate (1.55), Very active (1.725), Extra active (1.9).
BMR for women: 10×weight(kg) + 6.25×height(cm) - 5×age - 161
Be honest about activity level - most people overestimate
NEAT varies widely - active job vs desk job makes huge difference
Activity Level
Multiplier
Description
Example BMR 1,800
Sedentary
1.2
Desk job, little exercise
2,160 TDEE
Lightly Active
1.375
Light exercise 1-3 days/week
2,475 TDEE
Moderately Active
1.55
Moderate exercise 3-5 days/week
2,790 TDEE
Very Active
1.725
Hard exercise 6-7 days/week
3,105 TDEE
Extra Active
1.9
Physical job + hard training
3,420 TDEE
Q
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is calories burned at complete rest - just to keep you alive. TDEE adds activity on top of BMR. Example: If BMR is 1,700 and you're moderately active, TDEE = 1,700 × 1.55 = 2,635 calories. TDEE is always higher than BMR.
Never eat below your BMR long-term (causes metabolic adaptation)
TDEE is what you use for diet planning
TDEE - 500 calories = lose ~1 pound per week
TDEE + 300 calories = lean muscle gain
Metric
What It Measures
Uses
Example Value
BMR
Calories at complete rest
Never eat below this
1,700 cal
TDEE
Total daily calories burned
Maintenance calories
2,635 cal
TDEE - 500
Weight loss target
Lose 1 lb/week
2,135 cal
TDEE + 300
Muscle gain target
Lean bulk
2,935 cal
Q
How do I use TDEE for weight loss?
To lose weight, eat below your TDEE. A 500 calorie daily deficit (TDEE minus 500) loses ~1 lb/week. A 750 calorie deficit loses ~1.5 lb/week. Never go below 1,200 calories (women) or 1,500 (men). Example: TDEE 2,500 → eat 2,000 calories to lose 1 lb/week.
Add exercise to increase TDEE rather than cutting more food
Weight fluctuates daily - track weekly average instead
TDEE
Goal
Daily Calories
Weekly Loss
2,000
Lose 1 lb/week
1,500
-500/day
2,500
Lose 1 lb/week
2,000
-500/day
2,500
Lose 1.5 lb/week
1,750
-750/day
3,000
Lose 1 lb/week
2,500
-500/day
1-2 lbs per week is considered safe, sustainable weight loss. Faster rates often lead to muscle loss, nutrient deficiencies, and weight regain. Patience and consistency beat aggressive dieting every time.
Q
How do I use TDEE for muscle gain?
To build muscle, eat 200-500 calories above TDEE (caloric surplus) while strength training 3-5 days/week. Focus on protein (0.7-1g per pound bodyweight). Example: TDEE 2,500 → eat 2,700-3,000 calories with 150-180g protein for 180 lb person.
Protein is essential: 0.7-1g per pound of bodyweight
Smaller surplus = less fat gain (lean bulk)
Strength training is non-negotiable for muscle gain
Beginners can gain muscle in slight deficit (recomposition)
Sleep 7-9 hours - muscle grows during recovery
Surplus Size
Calories Above TDEE
Expected Gain
Muscle vs Fat
Lean bulk
+200-300
0.5 lb/week
Mostly muscle
Moderate bulk
+300-500
0.75-1 lb/week
Mix muscle/fat
Aggressive bulk
+500-750
1-1.5 lb/week
More fat gain
Q
Why is my weight loss stalling even at a calorie deficit?
Common reasons: 1) Underestimating calories (hidden oils, sauces, drinks), 2) Overestimating exercise calories, 3) TDEE decreased as you lost weight, 4) Water retention masking fat loss, 5) Metabolic adaptation from prolonged dieting. Solution: Recalculate TDEE, track more accurately, or take diet break.
Recalculate TDEE every 10-15 lbs lost
Use food scale - eyeballing underestimates by 20-50%
Water weight fluctuates 2-5 lbs daily - track weekly average
After 12+ weeks of deficit, take 1-2 week diet break at maintenance
Stress and poor sleep increase water retention
Plateaus are normal. Your body adapts to lower calories through reduced NEAT (moving less unconsciously), lower hormone levels, and improved efficiency. A 1-2 week "diet break" eating at maintenance can reset hormones and reduce water retention, often followed by a "whoosh" of weight loss.
Example Calculations
1TDEE for a 30-Year-Old Male (70 kg, 175 cm, Moderate)
Inputs
GenderMale
Age30
Weight70 kg
Height175 cm
Activity LevelModerately Active (1.55)
Result
Daily Burn (TDEE)2,556 cal/day
BMR1,649 cal/day
Weight Loss (-500 cal)2,056 cal/day
Mild Loss (-250 cal)2,306 cal/day
Mild Gain (+250 cal)2,806 cal/day
Weight Gain (+500 cal)3,056 cal/day
BMR = 10 × 70 + 6.25 × 175 - 5 × 30 + 5 = 1,649. TDEE = 1,649 × 1.55 = 2,556 cal/day. Subtract 500 for weight loss (2,056) or add 500 for weight gain (3,056).
2TDEE for a 40-Year-Old Female (65 kg, 163 cm, Sedentary)
Inputs
GenderFemale
Age40
Weight65 kg
Height163 cm
Activity LevelSedentary (1.2)
Result
Daily Burn (TDEE)1,570 cal/day
BMR1,308 cal/day
Weight Loss (-500 cal)1,070 cal/day
Mild Loss (-250 cal)1,320 cal/day
Mild Gain (+250 cal)1,820 cal/day
Weight Gain (+500 cal)2,070 cal/day
BMR = 10 × 65 + 6.25 × 163 - 5 × 40 - 161 = 650 + 1,018.75 - 200 - 161 = 1,308 cal/day. TDEE = 1,308 × 1.2 = 1,570 cal/day. Subtract 500 for weight loss (1,070) or add 500 for weight gain (2,070).
TDEE breaks down into four measurable components. BMR (Basal Metabolic Rate) accounts for 60–70% of total burn — the calories your body uses for breathing, circulation, cell repair, and temperature regulation while completely at rest. A 30-year-old male, 175 cm, 70 kg has a BMR of approximately 1,649 calories using the Mifflin-St Jeor equation.
Physical activity (15–30% of TDEE) includes both structured exercise and NEAT (Non-Exercise Activity Thermogenesis) — fidgeting, walking to the car, standing at your desk. NEAT varies by 200–900 calories per day between individuals, making it the largest source of TDEE variation beyond BMR. The Thermic Effect of Food (TEF) accounts for roughly 10% of TDEE: protein costs 20–30% of its calories to digest, carbs 5–10%, and fat 0–3%. This is one reason high-protein diets feel more satiating per calorie.
TDEE components for a moderately active 70 kg male
Component
% of TDEE
Example (TDEE 2,556)
Can You Control It?
BMR
60–70%
1,649 cal
Partially (muscle mass)
Exercise
5–15%
250–380 cal
Yes (training plan)
NEAT
10–20%
200–500 cal
Yes (daily movement)
TEF
~10%
~256 cal
Partially (protein intake)
2
Using TDEE for Weight Loss and Muscle Gain
A caloric deficit of 500 calories per day produces approximately 1 lb of fat loss per week (3,500 calories = 1 lb of fat). For a person with a TDEE of 2,556, eating 2,056 calories achieves this rate. Never go below your BMR (1,649 in this example) for extended periods — metabolic adaptation causes your body to reduce NEAT and lower thyroid output, stalling progress and increasing muscle loss.
For muscle gain, a surplus of 200–300 calories above TDEE (a "lean bulk" of 2,756–2,856 in this example) paired with progressive strength training 3–5 days per week maximizes muscle synthesis while minimizing fat gain. Protein intake of 0.7–1.0 g per pound of bodyweight is essential. Beginners can achieve "recomposition" (losing fat while gaining muscle) at maintenance calories due to the novelty stimulus. Use the Macro Calculator to split your TDEE target into optimal protein, carb, and fat ratios.
Calorie targets relative to TDEE
Goal
Calorie Target
Weekly Change
Protein Needs
Aggressive cut
TDEE – 750
–1.5 lb/week
1.0 g/lb bodyweight
Moderate cut
TDEE – 500
–1.0 lb/week
0.8 g/lb bodyweight
Maintenance
TDEE
0 lb/week
0.7 g/lb bodyweight
Lean bulk
TDEE + 250
+0.5 lb/week
0.8–1.0 g/lb bodyweight
3
Why Activity Level Is the Most Common Miscalculation
The activity multiplier is the single largest source of error in TDEE calculations. A 70 kg person with a BMR of 1,649 has a TDEE of 1,979 at Sedentary (1.2×) versus 3,133 at Extra Active (1.9×) — a 1,154 calorie difference. Most desk workers who exercise 3–4 times per week are Lightly Active (1.375), not Moderately Active (1.55), because the 20–22 hours of sedentary behavior outweigh the 1 hour of exercise.
A practical test: wear a fitness tracker for 2 weeks and check average daily step count. Under 5,000 steps = Sedentary. 5,000–7,500 = Lightly Active. 7,500–10,000 = Moderately Active. 10,000–12,500 = Very Active. Over 12,500 = Extra Active. Add structured exercise on top of this baseline. If your weight is not changing as predicted after 2–3 weeks, adjust your activity multiplier down one level rather than cutting more calories.
Recalculate TDEE every 10–15 pounds of weight change. A 10 lb loss reduces BMR by approximately 50–70 calories — enough to stall a deficit if not recalculated.
4
Mifflin-St Jeor vs. Other BMR Equations
The Mifflin-St Jeor equation (1990) is considered the most accurate BMR predictor for the general population, with an accuracy of ±10% in 82% of individuals (ADA validation study). The older Harris-Benedict equation (1919, revised 1984) overestimates BMR by 5–15% in overweight individuals. The Katch-McArdle equation uses lean body mass, making it more accurate for athletes with high muscle mass but requiring a body fat measurement.
For men: BMR = 10 × weight(kg) + 6.25 × height(cm) – 5 × age + 5. For women: BMR = 10 × weight(kg) + 6.25 × height(cm) – 5 × age – 161. The –161 offset for women reflects the average difference in lean mass between sexes. If your body fat percentage is known, the Katch-McArdle formula (BMR = 370 + 21.6 × lean mass in kg) may give a more personalized estimate.
Mifflin-St Jeor: Best for general population, most widely validated
Harris-Benedict (revised): Overestimates by 5–15% in overweight individuals
Katch-McArdle: Most accurate for athletes, requires body fat % input
All equations are estimates: ±10% individual variation is normal
Track actual weight change over 2–3 weeks to calibrate your true TDEE
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.
