BMI Calculator
Calculate your Body Mass Index (BMI) and find your weight category.
How to Use This Calculator
- Enter your Measurement System.
- Enter your Weight.
- Enter your Height.
- Click Calculate to see instant results with a step-by-step breakdown.
- Use the Share button to copy a link with your inputs pre-filled.
⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.
Frequently Asked Questions
How is BMI calculated?
BMI is calculated by dividing your weight in kilograms by the square of your height in metres: BMI = kg / m². For imperial units, the formula is: BMI = (weight in pounds / height in inches²) × 703.
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is considered a healthy or normal weight. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is classified as obese. However, BMI does not account for muscle mass or body composition.