BMI Calculator

BMI Calculator – Body Mass Index Explained

Use this free BMI Calculator to find your Body Mass Index and see if you are underweight, normal, overweight, or obese. Enter your height and weight in metric or US units and get instant results.

BMI Formula

• Metric: BMI = weight (kg) / [height (m)]²
• US: BMI = 703 × weight (lbs) / [height (in)]²

BMI Table for Adults (WHO)

What is BMI?

BMI (Body Mass Index) is a measure of body fat based on height and weight. It is widely used to assess whether a person is underweight, normal, overweight, or obese. While BMI is a useful screening tool, it does not directly measure body fat or health.

Health Risks of High or Low BMI

• High BMI: Increased risk of heart disease, diabetes, high blood pressure, and certain cancers.
• Low BMI: Risk of malnutrition, osteoporosis, and weakened immune system.

Limitations of BMI

• BMI does not distinguish between muscle and fat.
• May not be accurate for athletes, children, or the elderly.
• Should be considered along with other health indicators.