How to Use a BMI Calculator
A BMI (Body Mass Index) Calculator estimates your BMI using your weight and height. It is a simple screening tool that can help you understand whether your weight falls within a commonly used range for your height.
Steps to calculate BMI
- Enter your weight
- Metric: enter weight in kilograms (kg)
- Imperial: enter weight in pounds (lb)
- Enter your height
- Metric: enter height in centimeters (cm)
- Imperial: enter height in inches
- Click Calculate BMI.
- The calculator will display your BMI and a general category.
BMI Categories for Adults
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5–24.9 | Healthy weight |
| 25.0–29.9 | Overweight |
| 30.0 or higher | Obesity |
Benefits of Using BMI
- Quick screening: BMI provides a simple way to screen for weight categories.
- Easy to calculate: You only need height and weight.
- Helps track changes: You can monitor changes in BMI as your weight changes.
- Useful for health discussions: It can provide a starting point for conversations with a healthcare professional.
- Supports health awareness: Seeing your BMI can encourage you to pay attention to nutrition, physical activity, and other health factors.
Important Limitation
BMI does not directly measure body fat and cannot distinguish between muscle and fat. For example, a muscular person may have a high BMI despite having relatively low body fat. BMI also has limitations across different populations and age groups.
BMI Calculator
Calculate your Body Mass Index using your height and weight.
Please enter valid height and weight.
Your BMI is
Healthy BMI range: 18.5 – 24.9
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25 – 29.9 | Overweight |
| 30 or above | Obesity |
