1. What is % Weight Loss?

Percentage weight loss is a measure of how much weight a person has lost relative to their initial body weight. It's commonly used in medical and nutritional contexts to assess the significance of weight changes.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Initial weight — Starting weight in kilograms
• Current weight — Present weight in kilograms

Explanation: The formula calculates what percentage of the initial body weight has been lost.

3. Importance of Weight Loss Calculation

Details: Significant unintentional weight loss (>5% in 1 month or >10% in 6 months) may indicate underlying health issues and should be evaluated by a healthcare provider.

4. Using the Calculator

Tips: Enter both weights in kilograms. Initial weight must be greater than 0, and current weight cannot exceed initial weight for meaningful results.

5. Frequently Asked Questions (FAQ)

Q1: What is considered significant weight loss?
A: Generally, >5% in 1 month or >10% in 6 months is considered clinically significant.

Q2: How does this differ from BMI?
A: % weight loss measures change over time, while BMI is a static measure of weight relative to height.

Q3: When should I be concerned about weight loss?
A: If weight loss is unintentional, rapid, or accompanied by other symptoms like fatigue or appetite changes.

Q4: Can this be used for weight gain calculations?
A: Yes, the same formula can show percentage weight gain if current weight exceeds initial weight.

Q5: How accurate is this calculation?
A: The calculation is mathematically precise, but clinical significance depends on individual circumstances.