How to Calculate BMI
Understanding the simple steps to calculate your Body Mass Index
BMI Formula
BMI = weight (kg) ÷ height² (m²)
Steps to Bmi Calculate:
- Convert your height to meters (if in centimeters, divide by 100)
- Square your height (multiply it by itself)
- Divide your weight in kilograms by your squared height
- Round the result to one decimal place
Example Bmi Calculation
For someone who is:
- Height: 170 cm (1.7 m)
- Weight: 70 kg
1. Height in meters = 1.7 m
2. Height squared = 1.7 × 1.7 = 2.89 m²
3. BMI = 70 ÷ 2.89 = 24.2
This BMI of 24.2 falls within the normal weight range (18.5-24.9).
Unit Conversion Tips
Height Conversion
- • Centimeters to meters: divide by 100
- • Inches to meters: multiply by 0.0254
- • Feet to meters: multiply by 0.3048
Weight Conversion
- • Pounds to kilograms: divide by 2.205
- • Stones to kilograms: multiply by 6.35
Quick Tips for Accurate BMI Calculation
Use Accurate Measurements
Measure your height and weight accurately using calibrated equipment
Measure at the Right Time
Weigh yourself in the morning before eating and after using the bathroom
Record Your Results
Keep track of your BMI over time to monitor changes in your health status