BMI Calculator
Calculate Your Body Mass Index - Am I a Healthy Weight?
Instant Results
WHO Standards
Ideal Weight Range
Calculate Your BMI
BMI Categories
Underweight
BMI < 18.5
Normal Weight
BMI 18.5 - 24.9
Overweight
BMI 25 - 29.9
Obese Class I
BMI 30 - 34.9
Obese Class II+
BMI ≥ 35
BMI Limitations
- Doesn't distinguish between muscle and fat
- May not be accurate for athletes or elderly
- Doesn't account for bone density
Understanding BMI
What is 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.
Is BMI Accurate?
BMI is a useful screening tool, but it has limitations:
- Good for: General population screening, tracking trends over time
- Limited for: Athletes, bodybuilders, pregnant women, elderly
Better Alternatives
For a more accurate assessment of body composition, consider:
- • Body fat percentage measurement
- • Waist-to-hip ratio
- • Waist circumference
- • DEXA scan (most accurate)