BMI Calculator

Calculate your Body Mass Index and understand your health category. Get instant results with professional health insights.

Select Units

Your Measurements

kg
cm

BMI Categories

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

Health Information

What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It's a useful screening tool for weight categories.

Important Note

BMI is not a diagnostic tool and doesn't measure body fat directly. Consult healthcare professionals for comprehensive health assessment.

How Our BMI Calculator Works

1. Enter Measurements

Input your height and weight in your preferred units. Our free BMI calculator supports both metric (kg, cm) and imperial (lbs, ft/in) measurement systems for convenience.

2. Calculate BMI

Our BMI calculator uses the standard BMI formula (weight/height²) to calculate your Body Mass Index. It provides instant results with accurate calculations for health assessment.

3. Get Health Category

Receive your BMI value with health category classification and personalized recommendations. Perfect for health monitoring, fitness planning, and wellness tracking.

Working Principle of Our BMI Calculator

Standard BMI Formula

Our free online BMI calculator uses the internationally recognized BMI formula: BMI = weight (kg) / height (m)². For imperial units, it converts to metric first, then applies the standard formula for accurate results.

Health Category Classification

The BMI calculator classifies results according to WHO standards: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (≥30). It provides health insights and recommendations based on your BMI category.

Personalized Recommendations

Our BMI calculator provides personalized health recommendations based on your BMI category. It offers guidance on weight management, fitness goals, and lifestyle changes for optimal health and wellness.

Health Assessment Tool

Professional BMI calculation for health monitoring

Why Choose Our Free BMI Calculator?

Instant Calculation

Calculate BMI instantly with real-time results

Multiple Units

Supports metric and imperial measurement systems

Health Categories

WHO-standard health category classification

Mobile Friendly

Works perfectly on all devices and screen sizes

Frequently Asked Questions

Yes! Our free online BMI calculator is completely free to use. There are no hidden fees, registration requirements, or usage limits. You can calculate your BMI as much as you need without any cost.

BMI (Body Mass Index) is a measure of body fat based on height and weight. It's important for assessing health risks, monitoring weight changes, and providing guidance for healthy lifestyle choices and medical decisions.

Absolutely! Our BMI calculator supports both metric (kg, cm) and imperial (lbs, ft/in) measurement systems. You can choose your preferred units and get accurate BMI calculations regardless of the measurement system you use.

Our BMI calculator uses the standard WHO formula and provides highly accurate results. However, BMI is a screening tool and should be used alongside other health assessments. For medical advice, always consult with healthcare professionals.

Perfect For Various Health and Fitness Needs

Health Monitoring

Track your BMI over time for health monitoring and wellness assessment. Essential for identifying health risks, monitoring weight changes, and maintaining optimal health.

Fitness Planning

Use BMI calculations for fitness goal setting, workout planning, and progress tracking. Perfect for personal trainers, fitness enthusiasts, and health-conscious individuals.

Medical Assessment

Calculate BMI for medical assessments, health screenings, and clinical evaluations. Essential for healthcare professionals, medical students, and health research.