Calorie Deficit Formula:
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Calorie deficit occurs when you consume fewer calories than your body expends. It's a fundamental principle for weight loss, as it forces your body to use stored energy (fat) to meet its energy needs.
The calculator uses the Calorie Deficit formula:
Where:
Explanation: The equation calculates the difference between energy expenditure and intake, with adjustments for physical activity levels.
Details: Accurate calorie deficit calculation is crucial for effective weight management, ensuring sustainable weight loss while maintaining proper nutrition and energy levels.
Tips: Enter TDEE in kcal/day, daily calorie intake in kcal/day, and activity adjustment. All values must be valid positive numbers.
Q1: What is a safe calorie deficit for weight loss?
A: A deficit of 500-1000 kcal/day is generally safe and sustainable, leading to 1-2 pounds of weight loss per week.
Q2: How do I calculate my TDEE?
A: TDEE can be calculated using formulas like Mifflin-St Jeor or Harris-Benedict, considering your BMR and activity level.
Q3: Can too large a calorie deficit be harmful?
A: Yes, excessive deficits can lead to muscle loss, nutrient deficiencies, and metabolic slowdown.
Q4: Should activity adjustments be positive or negative?
A: Activity adjustments are typically positive for additional exercise expenditure and negative for reduced activity levels.
Q5: How often should I recalculate my calorie deficit?
A: Recalculate every 4-6 weeks or after significant weight loss (5-10% of body weight) to account for metabolic changes.