What does BMI Calculator do?
BMI Calculator computes your Body Mass Index from your height and weight using the standard formula BMI = weight (kg) / height (m)^2. Enter your measurements, choose metric or imperial units, and get an instant result with your BMI category, healthy weight range, and overall weight status.
Common uses
- Track weight status — see whether your BMI falls in underweight, normal, overweight, or obese ranges
- Set healthy targets — use the healthy weight range to find a goal weight for your height
- Monitor progress — recalculate after lifestyle changes to see how your BMI shifts over time
- Health screening — many doctors and insurance providers use BMI as a baseline health indicator
Key features
- BMI category — classifies your result into underweight, normal, overweight, or obese based on WHO ranges
- Healthy range — shows the weight range considered healthy for your specific height
- Weight status — provides a plain-language summary of what your BMI number means
How it works
The calculator applies the World Health Organization BMI formula: divide your weight in kilograms by the square of your height in meters. For imperial inputs the tool converts pounds and inches to metric before computing. Results map to four standard categories: underweight (BMI below 18.5), normal weight (18.5–24.9), overweight (25–29.9), and obese (30 and above).
Verdict
BMI Calculator is a fast, accurate way to understand your body composition from just two numbers. Open BMI Calculator and check your BMI in seconds.