Calculate your Body Mass Index using metric or imperial units.
Body Mass Index (BMI) is a simple measurement that uses your height and weight to estimate whether you have a healthy body weight. It was developed in the 1830s by Belgian mathematician Adolphe Quetelet and is still widely used today as a quick screening tool by doctors and health professionals worldwide.
BMI is calculated by dividing your weight in kilograms by the square of your height in meters. For example, a person who weighs 70 kg and is 1.75 m tall has a BMI of 70 ÷ (1.75 × 1.75) = 22.9, which falls in the normal range.
While BMI is a useful starting point, it does not account for muscle mass, bone density, age, or gender. Athletes may have a high BMI due to muscle rather than fat. Always consult a healthcare professional for a complete assessment of your health.
A BMI between 18.5 and 24.9 is considered healthy for most adults. However, this range may vary slightly by age and ethnicity.
BMI for children is calculated differently — it uses age and gender-specific charts. This calculator is designed for adults aged 18 and above.
Yes. BMI is just one indicator. Factors like diet, exercise, sleep, and stress all play a role in overall health regardless of BMI score.