BMI Calculator & Chart
Calculate your Body Mass Index (BMI) instantly. Understand BMI categories and what your score means for your health.
Understanding BMI
Body Mass Index (BMI) is a measure of body fat based on height and weight. BMI = Weight (kg) ÷ Height (m)². The result indicates health status: Underweight (< 18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (≥ 30).
How It Works
Enter your height in centimeters and weight in kilograms. The calculator instantly shows your BMI and category. Remember that BMI is just one indicator of health; muscle mass, bone density, and overall fitness also matter.
Frequently Asked Questions
Is BMI accurate for everyone? ▼
BMI is a general health indicator but has limitations. Athletes with high muscle mass may have high BMI despite being healthy. Elderly individuals may have different health implications. Consult a doctor for personalized assessment.
What's a healthy BMI? ▼
A BMI between 18.5 and 24.9 is considered normal weight. This range is associated with lowest health risks for most populations. Your ideal BMI depends on age, fitness level, and medical history.
How do I interpret my BMI? ▼
Below 18.5 = Underweight; 18.5-24.9 = Normal; 25-29.9 = Overweight; 30-34.9 = Obese Class I; 35-39.9 = Obese Class II; 40+ = Obese Class III. Higher BMI categories carry greater health risks.
Can I calculate BMI with pounds and inches? ▼
This tool uses metric units (kg and cm). To convert: 1 pound = 0.453 kg; 1 inch = 2.54 cm. Convert your measurements before entering them.
Should I lose weight if BMI is high? ▼
If BMI indicates overweight or obese category, consult a doctor or nutritionist. Weight loss through balanced diet and exercise is beneficial for health. Individual needs vary based on health conditions.