BMI Calculator - Body Mass Index Health Calculator

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⚖️ Body Mass Index (BMI) Calculator

Discover your body mass scale to analyze physical health. Enter your current body weight and standing height dimensions below.

Weight (kg)

Height (cm)

📖 How to Calculate Your Body Mass Index (BMI)

Follow these three steps to assess your weight status:

Enter your weight in kilograms (kg) in the weight field.
Enter your height in centimeters (cm) in the height field.
Click "Calculate BMI". The dashboard will show your index score, category color tag, and healthy weight margins.

💡 Understanding BMI Categories

The World Health Organization (WHO) classifies weight categories using index boundaries as follows:

Under 18.5: Underweight. You may need to consult a dietitian to evaluate weight gain guidelines.
18.5 to 24.9: Normal Weight. This is the optimal range associated with healthy physical metrics.
25 to 29.9: Overweight. Indicates excess weight relative to height scales.
30 or Higher: Obese. Associated with higher cardiovascular health risks.

🙋 Frequently Asked Questions (FAQs)

Do you save my health parameters?

No. Your weight and height details are processed locally using standard JavaScript functions inside your browser. No data is stored, keeping your health checks confidential.

Is BMI accurate for athletes?

BMI is a general ratio that does not distinguish muscle mass from body fat. Athletes or bodybuilders with high muscle mass may show an "overweight" rating despite having low body fat.

What is the mathematical formula for BMI?

BMI is calculated by dividing weight in kilograms by height in meters squared: BMI = weight (kg) / height² (m).