BMI Calculator - Calculate Your Body Mass Index
Calculate your BMI instantly with our free Body Mass Index calculator. Get detailed health insights and discover your ideal weight range.
What is BMI?
Body Mass Index (BMI) is a simple screening tool that uses height and weight to categorize body weight status. It helps identify potential health risks related to weight.
Key Features
- Supports both metric (kg, cm) and imperial (lbs, inches) units
- Instant BMI calculation with category classification
- Ideal weight range based on healthy BMI
- Visual BMI scale for easy interpretation
- Comprehensive health implications by category
How to Calculate BMI
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. BMI is a screening tool that can indicate whether a person is underweight, at a healthy weight, overweight, or obese.
Calculation Formulas
- Metric Formula: BMI = weight (kg) / height² (m²)
- Imperial Formula: BMI = (weight (lbs) / height² (inches²)) × 703
BMI Categories
- Underweight (< 18.5): Malnutrition, weakened immune system, osteoporosis, anemia, fertility issues.
- Normal Weight (18.5 - 24.9): Lower risk of chronic diseases, better energy levels, improved quality of life.
- Overweight (25 - 29.9): Increased risk of type 2 diabetes, high blood pressure, heart disease, sleep apnea.
- Obese (≥ 30): Significantly increased risk of serious health conditions including heart disease, stroke, type 2 diabetes, certain cancers.
When to Use This Calculator
- Track your weight management progress
- Screen for potential health risks
- Set realistic health goals
- Monitor changes over time
Benefits of Maintaining Healthy BMI
- Reduced risk of chronic diseases
- Better cardiovascular health
- Improved energy and mobility
- Enhanced quality of life
Important Limitations
- Does not distinguish between muscle and fat mass
- May not be accurate for athletes with high muscle mass
- Does not account for age, gender, or ethnicity differences
- Not suitable for pregnant or breastfeeding women
- Should be used as a general guideline, not a diagnostic tool
Medical Disclaimer: This BMI calculator is for informational purposes only and should not replace professional medical advice. Always consult with a qualified healthcare provider for personalized health guidance.