BMI Calculator

Calculate your Body Mass Index using height and weight

Measurements

cm
kg
years
Results update automatically as you type

Your BMI Results

Based on WHO standards

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BMI Value
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Category
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Range

Health Recommendations

• Maintain current weight through balanced diet and regular exercise

• Aim for 150 minutes of moderate exercise per week

• Continue healthy eating habits with proper portion control

About BMI

Understanding Body Mass Index and its implications for health

What is BMI?

Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. It's a widely used screening tool to categorize individuals as underweight, normal weight, overweight, or obese.

How is BMI calculated?

Metric System

BMI = weight (kg) ÷ height² (m)

Example: 70 kg ÷ (1.75 m)² = 22.9

Imperial System

BMI = (weight (lbs) ÷ height² (in)) × 703

Example: (154 lbs ÷ (69 in)²) × 703 = 22.8

BMI Categories

< 18.5
Underweight
18.5 - 24.9
Normal Weight
25.0 - 29.9
Overweight
≥ 30.0
Obese

BMI is a screening tool and may not reflect health status for all individuals

Limitations of BMI

  • Doesn't distinguish between muscle and fat mass
  • May not be accurate for athletes or very muscular individuals
  • Different accuracy for elderly individuals
  • Doesn't account for fat distribution
  • May vary in accuracy across ethnic groups

When to Consult a Professional

Consider consulting with a healthcare professional if:

  • Your BMI indicates you may be underweight or overweight
  • You have concerns about your weight or health
  • You need personalized advice for your specific situation
  • You're planning significant lifestyle changes