BMI Calculator (Body Mass Index)
Calculate Body Mass Index from weight and height (metric) with the WHO weight category and healthy weight range.
How to use the BMI Calculator
- Enter or select: Weight, Height.
- The results (BMI, WHO category, Healthy weight from, Healthy weight to, BMI Prime) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- BMI = mass (kg) / height² (m²)
About this tool
BMI is a screening measure for adults and does not account for muscle mass, age or sex.