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❤️ BMI calculator

Quickly check if you are underweight, normal, overweight, or obese based on your height and weight. This tool helps you understand your body composition using a widely accepted health metric.

cm
kg
Result

⚠️ This calculator is for informational purposes only and does not constitute health advice.

Body Mass Index (BMI) is a numerical value used to assess whether a person’s weight is appropriate for their height. It is commonly used by healthcare professionals as a screening tool to identify potential health risks.

How BMI Is Calculated

BMI is calculated using weight and height.

BMI = weight (kg) ÷ height² (m²)
BMI = (weight (lb) × 703) ÷ height² (in²)

Example

A person weighing 70 kg with a height of 1.75 m:

BMI = 70 ÷ (1.75 × 1.75) ≈ 22.9

BMI Categories

BMI RangeCategory
Below 18.5Underweight
18.5 – 24.9Normal weight
25.0 – 29.9Overweight
30.0 and aboveObese

Limitations of BMI

  • Does not distinguish between muscle and fat
  • May misclassify athletes
  • Does not account for age, sex, or fat distribution

Conclusion

BMI is a simple and useful screening tool, but it should be interpreted alongside other health indicators. For personalized advice, consult a healthcare professional.