What Is Body Mass Index?
Body Mass Index is a screening measure based on height and weight that helps classify weight ranges in adults.
BMI
Body Mass Index Calculator
This body mass index calculator helps you estimate BMI and understand whether your weight falls within common adult BMI categories.
Your BMI Result
Fill in your height and weight, then click calculate to view your BMI result and healthy weight range.
Body Mass Index Formula
Metric: BMI = weight (kg) ÷ height² (m²)
Imperial: BMI = (weight (lbs) ÷ height² (in²)) × 703
Body Mass Index Categories
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Possible nutritional deficiency |
| Normal Weight | 18.5 – 24.9 | Low risk |
| Overweight | 25 – 29.9 | Moderate risk |
| Obese | ≥ 30 | High risk |
Frequently Asked Questions
The Body Mass Index (BMI) is a screening tool used to identify whether an adult is underweight, at a healthy weight, overweight, or obese. It is calculated by dividing a person’s weight in kilograms by the square of their height in meters.
BMI stands for Body Mass Index.
It is calculated from height and weight using a standard formula.
No. BMI is a screening tool and does not directly measure body fat.
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