1. What is Fat Loss Percentage?

Definition: This calculator determines the percentage of body fat lost relative to your initial fat mass.

Purpose: It helps track progress in weight loss programs by showing what percentage of your original fat mass you've lost.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Fat Lost — Current fat mass reduction (kg)
• Initial Fat — Starting fat mass (kg)

Explanation: The formula calculates what percentage of your original fat mass has been lost.

3. Importance of Fat Loss Percentage

Details: Tracking fat loss percentage is more meaningful than just tracking weight loss, as it specifically measures fat reduction rather than overall weight changes that might include water or muscle.

4. Using the Calculator

Tips: Enter your initial fat mass and current fat loss in kilograms. Both values must be positive numbers, and fat lost cannot exceed initial fat.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure my fat mass?
A: Use body composition scales, skinfold calipers, DEXA scans, or other body fat measurement tools.

Q2: What's a healthy fat loss percentage?
A: A 5-10% reduction in body fat is typically noticeable, while 15-20% represents significant transformation.

Q3: Why use percentage instead of absolute numbers?
A: Percentage accounts for individual differences in starting points, making progress more comparable between people.

Q4: Can I calculate this for short time periods?
A: Yes, but daily fluctuations in water weight may affect accuracy. Weekly or monthly calculations are more reliable.

Q5: What if my fat lost exceeds initial fat?
A: The calculator will not compute this as it's biologically impossible to lose more fat than you initially had.