About BMI Calculator
BMI calculator computes Body Mass Index and ideal weight online, assesses weight health status. Supports metric/imperial units, essential for fitness weight loss, health management.
How to Use
- Enter height and weight
- Choose units (cm/inches, kg/pounds)
- View BMI value and health rating
- View ideal weight range
Frequently Asked Questions
- What BMI is normal?
- Adult standard (WHO): <18.5 underweight, 18.5-24.9 normal, 25-29.9 overweight, ≥30 obese. But BMI doesn't distinguish muscle from fat — fitness enthusiasts may have high BMI with normal body fat %.
- Is BMI accurate?
- BMI is simple screening tool, not precise. Doesn't consider body fat %/muscle mass/bone density/age/gender. More accurate assessment needs body fat measurement (scale/DEXA) or waist-hip ratio.
- How to calculate child BMI?
- Children/teens need growth curve percentile charts showing position among same-age peers for height-weight. Adult BMI standards don't apply. Pediatricians use specialized growth charts for assessment.