BMI Calculator
Check your Body Mass Index (BMI), category, and healthy weight range in one click.
BMI Categories:
Underweight: < 18.5
Normal: 18.5 - 24.9
Overweight: 25.0 - 29.9
Obesity: 30+
BMI Calculator Guide
What this calculator does
The BMI calculator estimates Body Mass Index using weight and height, then classifies the result into common health categories such as underweight, normal, overweight, and obesity. It also shows an approximate healthy weight range for your height so users can understand target boundaries in a simple, data-driven way.
How to use it
Enter current weight in kilograms and height in centimeters, then click calculate. The tool instantly displays BMI score, category badge, and suggested healthy range. Use these values as a high-level screening metric and not a full medical diagnosis, because body composition, age, and clinical context may alter interpretation.
Example usage
If your weight is 70 kg and height is 170 cm, the calculator returns BMI near 24.2 with category close to normal. If weight changes to 82 kg with same height, BMI moves upward and category may shift to overweight. This quick comparison supports progress tracking in fitness and lifestyle planning.