Is BMI accurate for everyone?

BMI does not distinguish muscle from fat. It is a rough screening metric and may not apply to athletes, children, or elderly individuals.

BMI Calculator

Body Mass Index from height and weight.

Guide & how to use

What this tool does

Enter your weight and height in metric or imperial units. See your BMI value and the WHO category (underweight, normal, overweight, obese). BMI is a screening tool, not a diagnosis.

Metric (kg / cm)Imperial (lbs / ft+in)

Weight (kg)

Height (cm)

BMI: 23.7
Category: Normal weight

BMI is a rough screening metric. It does not account for muscle mass, bone density, or individual health factors. Consult a healthcare professional.

Example input/output

Illustrative sample — your real inputs may look different.

Example input

75 kg · 178 cm

Example output

BMI 23.7 · Normal weight

How to use

Toggle between metric (kg/cm) and imperial (lbs/inches).
Enter your weight and height.
Read the BMI value and category—consult a professional for health advice.

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