BMI Calculator
A quick Body Mass Index check — and the healthy weight range for your height.
How to use
- Enter your weight in kilograms.
- Enter your height — in centimetres, or switch to feet and inches.
- Click “Calculate BMI” to see your BMI, its category and the healthy weight range for your height.
FAQ
What is a healthy BMI?
For adults, a BMI between 18.5 and 24.9 is classed as normal (healthy). Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above is obese.
Is BMI the same for children and athletes?
No — BMI is a rough guide for adults. It does not account for muscle mass, age or body type, so athletes and children should use it with care and talk to a doctor for personal advice.
Is my data stored?
No. The calculation happens in your browser — nothing you type is saved or sent anywhere.