BMI Calculator
Enter your height and weight to calculate your Body Mass Index and see your weight category.
Your BMI
24.2
Healthy weight
What is BMI?
Body Mass Index (BMI) is a simple screening measure that relates your weight to your height. It is calculated by dividing weight in kilograms by height in meters squared, and it is widely used as a quick, free starting point for discussing weight categories.
Calculated instantly, on your device
The formula runs directly in your browser as you type — no server call, no data stored.
Frequently asked questions
Is BMI accurate for everyone?
BMI does not account for muscle mass, bone density, age or sex, so athletes and some other groups may fall outside the "normal" range despite being healthy. Use it as a general indicator, not a diagnosis.
What BMI ranges are used?
Below 18.5 is classified as underweight, 18.5–24.9 as healthy weight, 25–29.9 as overweight, and 30 or above as obesity, following the World Health Organization's standard ranges.
Should I talk to a doctor about my BMI?
If you have concerns about your weight or health, a doctor or nutritionist can interpret your BMI alongside other factors like body composition and medical history.
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