What Is the TDEE Difference Between Sedentary and Active Lifestyles?
The Short Answer
A sedentary person burns roughly 1,800-2,000 calories per day while an active person burns 2,400-2,800. The difference of 500-800 calories daily equals about 1 pound of fat per week.
The Detailed Breakdown
TDEE calculated using Mifflin-St Jeor BMR multiplied by standard activity level factors.
| Calculation | Value | Assumptions |
|---|---|---|
| Sedentary TDEE | 1,950 cal/day | Activity multiplier of 1.2 (desk job, no exercise) |
| Active TDEE | 2,700 cal/day | Activity multiplier of 1.725 (exercise 5-6 days/week) |
| Daily Difference | 750 calories | Equivalent to roughly 1.5 lbs of fat per week |
Key Assumptions
- Based on Mifflin-St Jeor BMR with standard activity multipliers.
- Sedentary = desk job with little to no exercise.
- Active = vigorous exercise 5-6 days per week.
Adjust for Your Situation
Moving from sedentary to active adds about 750 calories of daily burn, a significant boost for weight management.
Use the Free CalculatorWhat Affects This Result
NEAT
Non-exercise activity (fidgeting, walking) can account for 200-500 extra calories daily.
Muscle Mass
Each pound of muscle burns about 6 calories at rest vs 2 for fat.
Thermic Effect of Food
Protein-rich diets increase calorie burn from digestion by 20-30%.