TDEE Calculator
Formula and Calculation Method
Components of Total Daily Energy Expenditure:
TDEE = BMR + TEF (10%) + EAT (Exercise) + NEAT (Non-Exercise Activity)Standard Multipliers: Sedentary (1.2) | Light (1.375) | Moderate (1.55) | Heavy (1.725) | Athlete (1.9)
Worked Example and Step-by-Step Calculation
- Age: 32
- Height: 183 cm (6 ft 0 in)
- Weight: 84 kg (185 lbs)
- Sex: Male
- Activity: Lightly Active (1.375x)
1. BMR = (10 × 84) + (6.25 × 183) - (5 × 32) + 5 = 840 + 1143.75 - 160 + 5 = 1,828.75 kcal
2. TDEE = 1,828.75 × 1.375 = 2,514.5 kcal / day
3. Maintenance Calories = 2,515 kcal/day
4. Fat Loss Target (-500 kcal) = 2,015 kcal/day
5. Muscle Building Target (+300 kcal) = 2,815 kcal/day
How to Use the TDEE Calculator
- Enter your age, biological sex, height, and body weight.
- Select your physical activity level honestly based on your weekly routine.
- Optionally enter known body fat % to unlock the Katch-McArdle formula.
- Review your BMR, TDEE, and maintenance versus cut/bulk caloric thresholds.
Common Mistakes, Limitations & Practical Guidance
- Fitness trackers frequently overestimate exercise calories burned by 20% to 40%.
- Thyroid conditions, prior extreme dieting, and hormonal factors can affect actual metabolic expenditure.
Frequently Asked Questions About TDEE Calculator
How do you calculate daily water requirement by body weight?
A general baseline is 30 to 35 ml of water per kilogram of body weight (roughly half an ounce per pound), increased by 350 to 500 ml for every 30 minutes of vigorous physical activity.
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the energy your body burns strictly at rest to keep vital organs functioning (heart, lungs, brain). TDEE (Total Daily Energy Expenditure) is your BMR plus all additional energy burned through walking, working, digesting food, and exercising.
How do I choose the right activity multiplier?
Most desk workers who exercise 3 to 4 times a week are "Lightly Active" (1.375). Only people with physically demanding jobs (construction, mail delivery) or athletes training twice daily are "Very Active" (1.725+).
What is NEAT in energy expenditure?
NEAT stands for Non-Exercise Activity Thermogenesis. It represents all calories burned doing non-exercise movement: fidgeting, pacing, taking the stairs, typing, and yard work. NEAT accounts for significant differences in metabolism between individuals.
How often should I recalculate my TDEE?
Recalculate your TDEE every time you lose or gain 5 to 10 pounds (2 to 5 kg), as a smaller body requires fewer calories to operate and exercise.
How does this page relate to the Calorie and Macro Calculator?
This page focuses specifically on energy expenditure science and activity tier breakdowns. For detailed macronutrient gram targets (protein, carbs, fat splits), visit our Calorie and Macro Calculator.