BMI Calculator
Calculate your Body Mass Index with health category classification and risk assessment.
FAQ
BMI Calculator FAQ
What is BMI?
Body Mass Index (BMI) is a measurement that uses your height and weight to estimate whether you are underweight, normal weight, overweight, or obese. Formula: BMI = weight(kg) / height(m)².
What are the BMI categories?
Underweight: below 18.5, Normal weight: 18.5–24.9, Overweight: 25–29.9, Obese Class I: 30–34.9, Obese Class II: 35–39.9, Obese Class III: 40 and above.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It does not account for muscle mass, bone density, age, sex, or body composition. Athletes may have high BMI but low body fat.
Should I use metric or imperial units?
Our calculator uses metric units (kg for weight, cm for height). To convert: 1 pound = 0.453 kg, 1 inch = 2.54 cm, 1 foot = 30.48 cm.
Is this medical advice?
No. This tool provides informational estimates only. Always consult a healthcare professional for medical advice about your weight, health, or fitness goals.
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