BMI Calculator
Calculate your Body Mass Index (BMI) to understand your health status. Fast, private, and works on any device.
How to use BMI Calculator
- Select your preferred unit system: Metric (cm/kg) or Imperial (ft/lbs).
- Enter your height using the input field or the slider.
- Enter your weight using the input field or the slider.
- View your calculated BMI score and corresponding health category instantly.
- Use the visual chart to see where you stand compared to healthy ranges.
Frequently Asked Questions
What is BMI?
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. It is used to screen for weight categories that may lead to health problems.
What is a healthy BMI range?
For most adults, a BMI between 18.5 and 24.9 is considered healthy. A BMI below 18.5 is considered underweight, between 25 and 29.9 is overweight, and 30 or higher is considered obese.
Is BMI accurate for everyone?
BMI is a useful screening tool but it has limitations. It does not measure body fat directly and does not account for muscle mass, bone density, or body composition. Athletes with high muscle mass may have a high BMI but not be overweight.
Is my data private?
Yes. This calculator runs entirely in your browser. Your height and weight data is never sent to any server.