BMI Calculator is a free online tool that calculates your Body Mass Index from weight and height in either metric (kg/cm) or imperial (lbs/inches) units. Get your BMI score and weight category instantly.
Body Mass Index (BMI) is a numerical value calculated from a person's weight and height. It is used as a screening tool to categorize individuals as underweight, normal weight, overweight, or obese. BMI is calculated as weight in kilograms divided by the square of height in meters.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly.
How to Use
- Select your unit system: Metric (kg/cm) or Imperial (lbs/inches)
- Enter your weight in the first field
- Enter your height in the second field
- Click Calculate BMI to see your result and category
Example
Input
Weight: 70 kg, Height: 175 cm
Output
BMI: 22.9 Category: Normal weight
FAQ
- What is a healthy BMI range?
- A BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is obese.
- Is this tool free?
- Yes, it is completely free with no registration required.
- Does this tool run in the browser?
- Yes, all calculations happen locally in your browser with no data sent to a server.