Calculate your ideal Total Body Weight (TBW) Deficit to achieve your weight loss goals. Our calculator uses your personal metrics to determine your daily calorie needs and the deficit required for sustainable fat loss. Start planning your effective weight management journey today.
Formula:
How the TBW Deficit is Calculated
This calculator uses a multi-step approach to determine your optimal Total Body Weight (TBW) Deficit, providing insights into your calorie needs for weight loss:
- Basal Metabolic Rate (BMR) Calculation (Mifflin-St Jeor Equation):
- For Men:
(10 × Weight in kg) + (6.25 × Height in cm) - (5 × Age in years) + 5 - For Women:
(10 × Weight in kg) + (6.25 × Height in cm) - (5 × Age in years) - 161
BMR represents the calories your body burns at rest, maintaining basic bodily functions.
- For Men:
- Total Daily Energy Expenditure (TDEE) Calculation:
TDEE = BMR × Activity FactorTDEE is the total calories you burn daily, including physical activity and digestion.
- Daily Calorie Deficit for Target Weight Loss:
Daily Deficit (kcal/day) = (Target Weekly Weight Loss (kg) × 7700 kcal/kg) / 7 days/weekApproximately 7700 kcal is the energy content of 1 kg of body fat, a key factor in calculating the deficit required for weight loss.
- Recommended Daily Calorie Intake for Deficit:
Recommended Intake = TDEE - Daily DeficitThis is the daily calorie intake recommended to achieve your target weekly weight loss.