What Is Adult BMI?
Adult BMI is a screening measure used to classify underweight, healthy weight, overweight, and obesity in adults.
Adults
Adult BMI Calculator
This adult BMI calculator is designed for standard BMI screening in adults using height and weight.
Your BMI Result
Fill in your height and weight, then click calculate to view your BMI result and healthy weight range.
Adult BMI Formula
Metric: BMI = weight (kg) ÷ height² (m²)
Imperial: BMI = (weight (lbs) ÷ height² (in²)) × 703
Adult BMI 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.
This version is intended for adults and follows standard BMI classification ranges.
No. BMI for children and teens is interpreted differently and is age- and sex-specific.
A BMI from 18.5 to 24.9 is generally considered healthy for adults.
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