BMI Calculator
BMI Calculator
Check your body mass index
What is BMI Calculator?
BMI (Body Mass Index) is a simple measure that shows whether your weight is healthy for your height. It is used worldwide by doctors and fitness experts to assess underweight, normal weight, overweight and obesity.
Enter your weight and height, and the BMI Calculator instantly shows your BMI value and which category you fall into — along with the healthy weight range for your height.
How to use this tool
- Enter your weight in kilograms.
- Enter your height in centimetres.
- Click Calculate BMI.
- See your BMI value, category and the healthy weight range.
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered healthy (normal weight) for most adults.
How is BMI calculated?
BMI = weight (kg) divided by height (metres) squared. The tool converts your height from cm automatically.
Is BMI accurate for everyone?
BMI is a general guide. Athletes and bodybuilders may have high BMI due to muscle, not fat. Consult a doctor for a complete health assessment.
What are the BMI categories?
Below 18.5 = Underweight, 18.5–24.9 = Normal, 25–29.9 = Overweight, 30+ = Obese.