1. What is BMI Percentage?

BMI Percentage is a measure that compares an individual's Body Mass Index (BMI) to a reference BMI value, expressed as a percentage. It helps assess how much a person's BMI deviates from a standard or ideal value.

2. How Does the Calculator Work?

The calculator uses the BMI Percentage formula:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( Reference BMI \) — Standard BMI value for comparison (typically 22 kg/m²)

Explanation: The equation calculates what percentage the measured BMI is of the reference BMI.

3. Importance of BMI Percentage

Details: BMI percentage provides a relative measure of body mass compared to a standard, which can be more meaningful than absolute BMI values in certain contexts like growth charts or population studies.

4. Using the Calculator

Tips: Enter your current BMI and a reference BMI value (default is 22 kg/m², which is often considered ideal). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a good BMI percentage?
A: 100% means your BMI equals the reference BMI. Values significantly above or below may indicate underweight or overweight.

Q2: What reference BMI should I use?
A: 22 kg/m² is commonly used as it's in the middle of the healthy range (18.5-24.9), but you can use any relevant reference value.

Q3: How is this different from regular BMI?
A: It provides a relative measure compared to a standard, rather than an absolute classification.

Q4: Can I use this for children?
A: For children, BMI-for-age percentiles are more appropriate than this calculation.

Q5: What's the Python code for this calculation?
A: Here's a simple implementation:
def bmi_percentage(bmi, reference=22): return (bmi/reference)*100