Body Mass Index (BMI) Ratio Calculator
Calculate your Body Mass Index (BMI) to assess body weight for males and females. BMI is a measure of body fat based on weight and height, helping evaluate health risks.
Result
Detailed Steps
Visual Representation
Formula
BMI Definition
The Body Mass Index (BMI) is calculated by dividing weight in kilograms by the square of height in meters:
Interpretation
| Category | BMI (kg/m²) | Terms |
|---|---|---|
| Underweight | <18.5 | Below healthy weight range |
| Normal | 18.5–24.9 | Healthy weight range |
| Overweight | 25.0–29.9 | Above healthy weight range |
| Obesity | ≥30.0 | Significantly above healthy weight |
BMI is the same for males and females. A BMI within 18.5–24.9 is considered healthy. Consult a healthcare provider for personalized advice.
How to Use the BMI Calculator
- Enter your weight in kilograms (kg) (e.g., 70).
- Enter your height in meters (m) (e.g., 1.75).
- Select your sex (Male or Female).
- Choose your preferred display mode (Standard, Step by Step, or Chart).
- Click the “Calculate” button.
- View your results, including your BMI and category (Underweight, Normal, Overweight, Obesity), in the selected view. The chart view shows your BMI within its category.
Frequently Asked Questions (FAQs)
What is Body Mass Index (BMI)?
BMI is a screening tool that measures the ratio of weight to height squared to estimate body fat and assess health risks related to body weight.
Is BMI different for males and females?
No, the BMI formula and categories are the same for both males and females. However, body composition may differ, so consult a healthcare provider for interpretation.
What does a high BMI mean?
A BMI of 25.0–29.9 indicates overweight, and 30.0 or higher indicates obesity, which may increase risks for health issues like heart disease or diabetes.
How can I reduce my BMI?
To lower BMI, adopt a balanced diet, increase physical activity (e.g., 150 minutes of moderate exercise weekly), and make lifestyle changes. Consult a healthcare provider for a tailored plan.
Why is BMI used as a health indicator?
BMI is a simple, widely used tool to screen for weight-related health risks. It’s not a direct measure of body fat but correlates with health outcomes in populations.