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BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units.
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What is the BMI Calculator?
The BMI Calculator computes Body Mass Index from height and weight in metric (kg/cm) or imperial (lbs/inches) units, displaying BMI score and WHO weight classification.
Who is the BMI Calculator for?
Used by individuals monitoring health, fitness coaches, and healthcare professionals as a population-level screening metric.
How to Use the BMI Calculator
- Select your unit system (Metric or Imperial).
- Enter your height and weight.
- View BMI score and weight category.
Worked Calculation Example
Height 170cm, weight 70kg → BMI 24.2 (Normal weight range: 18.5–24.9).
Frequently Asked Questions
Is BMI an accurate measure of health?
BMI is a useful screening tool but has limitations — it does not distinguish muscle from fat mass, so athletes may have elevated BMI despite low body fat.
What is a healthy BMI?
WHO guidelines: Underweight < 18.5, Normal 18.5–24.9, Overweight 25–29.9, Obese ≥ 30.