Body Mass Index (BMI) Calculator

Body Mass Index (BMI) is a widely used metric to assess whether an individual has a healthy body weight for their height. It provides a quick estimation of body fat and can help identify potential health risks associated with being underweight, overweight, or obese.

BMI Calculator

BMI Calculator: Measure Your Body Mass Index Accurately

Complete guide to understanding BMI calculation, interpretation, and maintaining healthy weight

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BMI Calculator – Check Your Body Mass Index

What is BMI and Why It's Important

Body Mass Index (BMI) is a simple calculation using a person's height and weight to assess body fat and overall health risk. BMI is widely used by healthcare professionals to screen for weight categories that may lead to health problems. Our BMI calculator provides instant, accurate results with proper categorization according to WHO standards.

BMI Calculation Formula

Standard BMI Formula:

BMI = weight (kg) / [height (m)]²

Imperial System Formula:

BMI = [weight (lbs) / [height (inches)]²] x 703

Metric System Formula:

BMI = weight (kg) / [height (m)]²

BMI Categories and Interpretation

BMI RangeCategoryHealth RiskRecommendation
Below 18.5UnderweightNutritional deficiencyConsult nutritionist
18.5 - 24.9Normal weightLow riskMaintain healthy lifestyle
25.0 - 29.9OverweightModerate riskWeight management advised
30.0 and aboveObesityHigh riskMedical consultation needed

Key Features of Our BMI Calculator

Dual Measurement Systems

Supports both metric (kg, cm) and imperial (lbs, feet) units

Progress Tracking

Track your BMI changes over time with history feature

Professional Standards

Uses WHO-approved BMI categories and guidelines

Mobile Friendly

Works perfectly on smartphones, tablets, and desktops

Why Regular BMI Monitoring Matters

Health Risk Assessment

Identify potential health risks associated with weight

Diet Planning

Create appropriate diet plans based on BMI results

Fitness Goals

Set realistic fitness and weight management goals

Progress Monitoring

Track effectiveness of your health and fitness regimen

Understanding BMI Limitations

Important Considerations

While BMI is a useful screening tool, it doesn't directly measure body fat. It may not accurately reflect health status for athletes (high muscle mass), elderly (muscle loss), or certain ethnic groups. Always consult healthcare professionals for comprehensive health assessment.

  • Doesn't distinguish muscle from fat
  • Doesn't account for fat distribution
  • May not be accurate for athletes
  • Doesn't consider age and gender variations

Healthy Weight Range Guide

Height: 5'0" (152 cm)

Healthy Weight Range

97-128 lbs
(44-58 kg)

Height: 5'6" (168 cm)

Healthy Weight Range

118-155 lbs
(54-70 kg)

Height: 6'0" (183 cm)

Healthy Weight Range

140-184 lbs
(64-83 kg)

Frequently Asked Questions

For general health monitoring, checking your BMI once a month is sufficient. If you're on a weight management program, you might check it every 2 weeks to track progress.

BMI may not be accurate for individuals with high muscle mass as it doesn't distinguish between muscle and fat. Athletes might show as overweight despite having low body fat.

BMI is a height-to-weight ratio while body fat percentage measures actual fat mass. Body fat percentage is more accurate but requires specialized equipment to measure.

Tips for Maintaining Healthy BMI

Nutrition Tips
  • Eat balanced meals with proper portions
  • Include fruits and vegetables daily
  • Stay hydrated with water
  • Limit processed foods and sugars
Exercise Recommendations
  • 150 minutes moderate exercise weekly
  • Include strength training 2x weekly
  • Stay active throughout the day
  • Find activities you enjoy

Ready to Check Your BMI?

Use our free BMI calculator to assess your health status and get personalized recommendations

Calculate Your BMI Now