BMI Calculator interactive tool
Calculator
Body Mass Index (BMI) is weight in kg divided by height in meters squared. It is a screening tool, not a measure of body fat or health.
Result
24.2
Normal
What Is BMI?
Body Mass Index (BMI) is a simple numerical measure that compares your weight to your height. It is widely used by medical professionals and organizations like the WHO as a quick screening tool to categorize individuals into different weight brackets.
BMI Categories
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obese: BMI 30 or greater
Limitations of BMI
While BMI is a useful general guideline, it does not directly measure body fat. This means it has significant limitations: athletes with high muscle mass may be classified as "overweight" or "obese" despite having very low body fat percentages. Similarly, older adults who have lost muscle mass might fall into the "normal" range while actually carrying excess body fat. Always consult a healthcare provider for a comprehensive health assessment.
How To Use the BMI Calculator
- Choose metric (kg, cm) or imperial (lbs, ft/in).
- Enter your weight and height.
- Review your BMI and weight category (underweight, normal, overweight, obese).
- Use Example to load sample values, or Reset to clear.