BMI Calculator

What is BMI (Body Mass Index)?

The Body Mass Index (BMI) serves as an indicator of body fat, calculated using height and weight. It is an effective screening instrument for detecting possible health issues related to weight.

Note: BMI functions as a screening tool and should not be considered diagnostic. It does not provide a direct measurement of body fat and may lack accuracy for athletes, pregnant women, or older adults. It is advisable to seek a thorough health evaluation from a healthcare professional.

How to Use Our BMI Calculator

1. Choose your unit system: Select either Metric (kg/cm) or Imperial (lbs/ft/in)
2. Enter your height: Input your height in centimeters or feet and inches
3. Enter your weight: Input your weight in kilograms or pounds
4. Calculate: Click the "Calculate BMI" button to get your results instantly
5. Interpret results: Review your BMI score and health category classification

BMI Categories and Health Implications

• Underweight (BMI below 18.5): May indicate malnutrition, eating disorders, or other health issues. Consider consulting a healthcare provider.
• Normal Weight (BMI 18.5-24.9): Indicates a healthy weight range associated with lower risk of chronic diseases.
• Overweight (BMI 25-29.9): May increase risk of heart disease, diabetes, and other health conditions. Lifestyle changes may be beneficial.
• Obese (BMI 30 and above): Significantly increases risk of serious health conditions. Medical consultation is recommended.

BMI Calculator Formula

BMI calculation is done as follows:

BMI = weight ÷ height²

Metric Units: BMI = weight (kg) / height (m)²

Imperial Units: BMI = (weight (lbs) / height (inches)²) × 703

BMI Calculation Examples

Metric Example: If you are 70 kg and 175 cm tall: BMI = 70 ÷ (1.75)² = 22.9

Imperial Example: If you are 154 lbs and 69 inches tall: BMI = (154 ÷ 69²) × 703 = 22.7

Important Disclaimer

BMI is a screening tool that does not factor in muscle mass, bone density, overall body composition. High muscle mass has the potential to result in an increased BMI in the presence of an athlete's lean physique. It is most constructive when used in conjunction with other health assessments, and should be read by health professionals, particularly individuals with special body compositions or medical needs. Information on this page should not be used as a substitute for medical advice and treatment.