BMI Calculator
Everyday
Enter your height and weight to get your Body Mass Index and its WHO category — underweight, normal, overweight, or obese. Works in metric or imperial units and shows the healthy weight range for your height. Your inputs stay on your device.
Healthy range: 53.5–72.0 kg
How to use
- Pick metric or imperial units.
- Enter your height and weight.
- Read your BMI value and category.
- Compare your weight to the healthy range for your height.
Frequently asked questions
- How is BMI calculated?
- BMI = weight (kg) ÷ height (m)². Imperial inputs are converted to metric for the formula.
- What are the categories?
- Per WHO: under 18.5 is underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese.
- Is BMI a good measure of health?
- BMI is a quick screening tool, but it doesn't distinguish muscle from fat and isn't ideal for children, athletes, or pregnant people. Talk to a doctor for a real assessment.
- Are my values stored?
- Only in your browser's local storage so the form remembers them next time — nothing is uploaded.
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