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Weight Loss Formula:
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The weight loss percentage is a standardized way to measure weight loss that accounts for different starting weights. It provides a more meaningful comparison than absolute weight loss numbers.
The calculator uses the weight loss percentage formula:
Where:
Explanation: This formula calculates what percentage of your initial body weight you have lost. A 100% weight loss would mean you've lost all your initial weight (theoretical).
Details: Percentage weight loss is a key metric in health and fitness as it provides a standardized way to track progress regardless of starting weight. It's particularly useful in medical settings for assessing obesity treatment effectiveness.
Tips: Enter your initial weight and current weight in kilograms. Both values must be positive numbers, with current weight less than or equal to initial weight for meaningful results.
Q1: What does 100% weight loss mean?
A: 100% weight loss would mean you've lost all your initial body weight (current weight = 0 kg), which is theoretically possible but practically impossible for living humans.
Q2: What is considered significant weight loss?
A: Clinically significant weight loss is typically 5-10% of initial body weight, which can lead to measurable health improvements.
Q3: Why use percentage instead of absolute weight?
A: Percentage accounts for different starting weights, making progress comparisons more meaningful between individuals of different sizes.
Q4: How often should I calculate my weight loss percentage?
A: Weekly measurements are generally recommended, as daily fluctuations in water weight can mask true fat loss.
Q5: Can I use pounds instead of kilograms?
A: The calculator uses kg, but you can convert pounds to kg by dividing by 2.205. The percentage result would be the same regardless of unit.