Home
Back
Weight Loss Calories Formula:
| From: | To: |
This calculator estimates the daily calorie intake needed for weight loss in females based on the Mifflin-St Jeor equation for Basal Metabolic Rate (BMR) minus a 500-calorie deficit for sustainable weight loss.
The calculator uses the following formulas:
Where:
Explanation: The equation calculates your Basal Metabolic Rate (BMR) - the calories your body needs at rest, then subtracts 500 calories to create a daily deficit for gradual weight loss.
Details: Calculating appropriate calorie intake is crucial for sustainable weight loss. A 500-calorie daily deficit typically results in losing about 0.5 kg (1 lb) per week, which is considered a safe and sustainable rate.
Tips: Enter your current weight in kg, height in cm, and age in years. All values must be valid (weight > 0, height > 0, age between 1-120). For best results, use accurate measurements.
Q1: Why subtract 500 calories from BMR?
A: A 500-calorie daily deficit creates a 3500-calorie weekly deficit, which typically results in losing about 0.5 kg (1 lb) per week - a safe and sustainable rate.
Q2: Is this calculation accurate for everyone?
A: While the Mifflin-St Jeor equation is one of the most accurate BMR formulas, individual metabolism can vary. This should be used as a starting point and adjusted based on results.
Q3: Should I eat below my BMR for weight loss?
A: It's generally not recommended to eat below your BMR for extended periods as this can slow your metabolism. The 500-calorie deficit from BMR is a safe approach.
Q4: How often should I recalculate my calorie needs?
A: Recalculate every 4-6 weeks or after significant weight loss (5+ kg) as your BMR decreases with weight loss.
Q5: What if I'm very active?
A: This calculation provides baseline calories. If you're highly active, you may need to adjust upward slightly to maintain energy levels while still maintaining a deficit.