Free BMI Calculator
Enter your height and weight to calculate your Body Mass Index and weight category.
Your BMI is
24.2
Normal weightHow to use this tool
Choose the Metric or Imperial tab depending on which units you prefer. Enter your height and weight, and your BMI updates instantly with no button to press.
The result shows your BMI value along with a category label (underweight, normal weight, overweight, or obese) based on standard BMI ranges used by health organizations.
This tool is useful for a quick, general check on whether your weight falls within a typical healthy range for your height. It is a screening tool, not a medical diagnosis.
FAQ
- How is BMI calculated?
- BMI is calculated as weight in kilograms divided by height in meters squared. For imperial units, height in feet and inches and weight in pounds are converted to metric first.
- What do the BMI categories mean?
- Under 18.5 is underweight, 18.5 to 24.9 is normal weight, 25 to 29.9 is overweight, and 30 or above is obese, based on standard World Health Organization ranges.
- Is BMI an accurate measure of health?
- BMI is a useful general screening tool, but it doesn't account for muscle mass, bone density, or body composition. It should not replace advice from a healthcare provider.
- Is my height and weight data stored anywhere?
- No. All calculations happen locally in your browser. Nothing you enter is uploaded or saved.