Calculate your Body Mass Index instantly with the free BMI Calculator from Blanza Tools. Enter your height and weight — in metric or imperial units — to find out whether you are in the underweight, healthy, overweight or obese range.
Enter your height and weight to calculate your Body Mass Index in seconds. Our free BMI calculator supports metric and imperial units and shows the healthy weight range for your height.
How to use
Choose metric (cm/kg) or imperial (ft/in, lbs) units.
Enter your height and weight.
View your BMI score and weight category instantly.
Frequently Asked Questions
What is BMI?
Body Mass Index is a number calculated from your height and weight that screens for weight categories that may lead to health problems.
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally considered healthy for adults.
Is BMI accurate for everyone?
BMI is a screening tool, not a diagnosis. It may be less accurate for athletes with high muscle mass, pregnant women and older adults — consult a doctor for personal advice.
Which units are supported?
Both metric (centimetres and kilograms) and imperial (feet, inches and pounds).
Is this medical advice?
No. The result is informational only and not a substitute for professional medical advice.