How to Use BMI Calculator
Enter your height and weight in metric or imperial units to get your Body Mass Index and see whether it falls in the underweight, normal, overweight or obese range on a color-coded gauge.
Open the BMI Calculator tool →What is BMI Calculator?
Calculate your Body Mass Index and see your weight category on a visual scale. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use BMI Calculator
- Open the BMI Calculator tool.
- Enter your details or values.
- The result is calculated instantly.
- Copy or use the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
Is BMI accurate for everyone?
BMI is a quick population-level screen but doesn't distinguish muscle from fat, so athletes may read high. Use it alongside other measures and professional advice.
Ready to try it?
Open BMI Calculator →