BMI Calculator

Calculate your Body Mass Index to understand your weight category and health risks

Male
Female
Metric
Imperial
Please enter valid values for all fields.
24.5
Normal Weight
Underweight
Normal
Overweight
Obese

BMI Categories

Underweight < 18.5
Normal weight 18.5 - 24.9
Overweight 25 - 29.9
Obese ≥ 30

Health Insights

  • Your BMI indicates a healthy weight range for your height.
  • Maintain a balanced diet with plenty of fruits and vegetables.
  • Aim for at least 30 minutes of physical activity daily.
  • Regular check-ups can help maintain your current health status.

BMI is a screening tool, not a direct measure of body fat or health. Consult a healthcare provider for a comprehensive assessment.

Understanding the BMI Formula

The Body Mass Index (BMI) is a simple numerical measure of a person's weight in relation to their height. It's a widely used indicator of whether you have a healthy weight for your height.

How BMI is Calculated:

The standard formula for calculating BMI is:

BMI = weight (kg) / [height (m)]²

In simpler terms, here are the steps our calculator follows:

  1. Measure your weight in kilograms (kg).
  2. Measure your height in centimeters (cm).
  3. Convert your height to meters (m) by dividing your height in centimeters by 100. (e.g., 170 cm becomes 1.70 m)
  4. Square your height in meters. (e.g., 1.70 m * 1.70 m = 2.89 m²)
  5. Divide your weight (kg) by your squared height (m²). (e.g., If your weight is 70 kg, then 70 / 2.89 = 24.22)

The resulting number is your BMI, which is then used to place you into one of the standard weight categories. Our calculator handles all these steps automatically for you!