Enhanced BMI Calculator
Calculate your Body Mass Index (BMI) using your age, weight, and height.
Your Body Mass Index (BMI) is:
-- --Understanding Your BMI Result
Body Mass Index (BMI) is a common screening tool calculated from your weight and height. It provides a general indication of potential weight-related health risks.
The standard categories shown are typically used for adults:
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obese: BMI 30 or greater
Note on Age: This calculator uses the standard BMI formula. While age is collected, it doesn't change this calculation. For children and adolescents (typically under 20), BMI interpretation relies on age- and sex-specific percentiles (BMI-for-age), not these fixed categories. Consult a healthcare provider for BMI interpretation for non-adults or if you have health concerns.
How to Use This BMI Calculator
Enter your current age. Then, input your weight and select the unit (kg or lb). Next, input your height and select the unit (cm, m, ft, or in). Click the "Calculate BMI" button to see your result and its position on the BMI scale chart.