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BMI Calculator

Calculate BMI instantly with ideal weight range and health advice.

Enter height and weight to calculate BMI

BMI Classification (WHO)

ClassificationBMI Range (kg/m²)
Underweight
< 18.5
Normal
18.5 - 24.9
Overweight
25 - 29.9
Obese
≥ 30

What is BMI?

Body Mass Index (BMI) is a value derived from the mass (weight) and height of a person. It is a standard widely used internationally to measure body fatness and health status, applicable to most adults aged 18-65.

BMI Formula

BMI = weight (kg) ÷ height² (m²)
Example: Height 1.75m, Weight 70kg
BMI = 70 ÷ (1.75 × 1.75) = 22.9

Limitations of BMI

While BMI is a useful indicator, it has limitations. It does not distinguish between muscle and fat. Therefore, it may overestimate body fat in athletes or those with a muscular build, and underestimate body fat in older persons or those who have lost muscle.

About This Tool

The BMI Calculator is a professional health assessment tool. Simply enter your height and weight to instantly calculate your Body Mass Index. Based on WHO standards, it provides four BMI classifications: underweight, normal, overweight, and obese, along with your ideal weight range. Personalized health advice helps you manage weight and health scientifically.

Features

  • 📊 Quick Calculation: Instant BMI calculation
  • ⚖️ Result Analysis: BMI range and health advice
  • 📏 Standard Weight: Calculate your ideal weight range
  • 📱 Responsive Design: Works perfectly on mobile and desktop