BMI Calculator
Calculate your Body Mass Index (BMI) to understand your weight status. Supports both metric and imperial units.
Calculate Your BMI
Free BMI Calculator - Calculate Your Body Mass Index Online
Our free BMI calculator helps you determine your Body Mass Index instantly. Whether you're tracking your fitness goals, monitoring your health, or managing your weight, this tool provides accurate BMI calculations with support for both metric and imperial units. Calculate your BMI online for free, no signup required.
What is BMI (Body Mass Index)?
Body Mass Index (BMI) is a widely used screening tool that estimates body fat based on your height and weight. The BMI formula calculates your body mass index by dividing your weight in kilograms by your height in meters squared (BMI = kg/m²). This health metric helps categorize individuals into weight ranges: underweight, normal weight, overweight, or obese.
How to Use Our BMI Calculator
Our BMI calculator supports multiple unit systems for your convenience. You can calculate BMI using metric units (kilograms and centimeters/meters) or imperial units (pounds and feet/inches). Simply enter your weight and height, and our tool will instantly calculate your BMI, display your weight category, and show your ideal weight range for optimal health.
BMI Categories and Health Insights
- Underweight (BMI < 18.5): May indicate insufficient body weight. Consult with healthcare providers for personalized nutrition and health advice.
- Normal Weight (BMI 18.5-24.9): Healthy body weight range. Maintain a balanced diet and regular exercise for optimal health.
- Overweight (BMI 25-29.9): May benefit from weight management strategies. Consider lifestyle changes, including diet and physical activity.
- Obese (BMI ≥ 30): Higher health risks. Consult with healthcare professionals for comprehensive weight management plans.
Benefits of Using Our Free BMI Calculator
- Instant Results: Calculate your BMI in seconds with real-time calculations
- Multiple Unit Support: Works with metric (kg, cm, m) and imperial (lbs, ft, in) measurements
- Ideal Weight Range: Discover your healthy weight range based on BMI 18.5-24.9
- Health Insights: Get personalized recommendations based on your BMI category
- Privacy-Focused: All calculations happen locally in your browser - no data stored
- Free Forever: No signup, no fees, unlimited BMI calculations
Important Health Disclaimer
BMI is a screening tool and not a diagnostic measure of body fatness or overall health. It may not be accurate for athletes with high muscle mass, elderly individuals, or pregnant women. Always consult with qualified healthcare providers for personalized health advice, medical diagnosis, and treatment recommendations. This BMI calculator is for informational purposes only and should not replace professional medical consultation.
- • BMI formula: Weight (kg) ÷ Height (m)² or Weight (lbs) × 703 ÷ Height (in)²
- • BMI is a screening tool, not a diagnostic of body fatness or health
- • Consult with a healthcare provider for personalized health advice
- • BMI may not be accurate for athletes, elderly, or pregnant women