BMI Calculator: Complete Guide
The BMI calculator estimates body mass index from height and weight and places the result in a general adult screening category. BMI can be a useful starting point, but it does not account for muscle mass, age, body composition, or medical history.
How to Use This Calculator
- Enter your height in centimetres.
- Enter your body weight in kilograms.
- Review the BMI score and general category as a screening result.
Calculation Formula
BMI = Weight (kg) ÷ Height² (m)
A person who is 172 cm tall and weighs 70 kg has a BMI of approximately 23.7, which falls in the general healthy range for many adults.
Frequently Asked Questions
What is a healthy BMI range?
For many adults, 18.5 to 24.9 is used as a general healthy range, but individual interpretation varies.
Can BMI diagnose a health condition?
No. BMI is a screening measure, not a diagnosis. Discuss concerns about weight or health with a qualified clinician.
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This calculator is for general information only and is not medical advice or a diagnosis.