BMI Calculator
Calculate your Body Mass Index and see which weight range you fall in.
How it’s calculatedBMI = weight in kilograms ÷ (height in metres)². Categories follow the World Health Organization adult ranges.
How to calculate BMI
- Enter your heightUse cm or feet and inches.
- Enter your weightUse kg or pounds.
- See your BMIYour BMI and weight category appear instantly.
About the BMI Calculator
BMI is a quick screening number that shows whether your weight is in a healthy range for your height.
- Metric and imperial units
- WHO adult BMI categories
- Instant result
BMI Calculator FAQ
What is a healthy BMI?
For adults, 18.5 to 24.9 is considered a healthy range by the World Health Organization.
How is BMI calculated?
Weight in kilograms divided by height in metres squared.
Is BMI accurate for everyone?
BMI does not measure body fat directly and may not suit athletes, children or pregnant women. Ask a doctor for advice.
Is it free?
Yes.