Categories
Adult BMI categories commonly used in calculators: underweight (below 18.5), normal (18.5–24.9), overweight (25–29.9), and obese (30 and above).
Thresholds may differ for certain populations. Pediatric BMI uses age- and sex-specific percentiles rather than fixed adult cutoffs.
Limitations
BMI does not distinguish muscle from fat. Athletes and older adults may be misclassified without additional context.
Consult qualified health professionals for personalized assessment. Calculators provide educational estimates only.
Key takeaways
- BMI is a screening metric, not a diagnostic test.
- Context matters for athletes, older adults, and children.
- Pair BMI with professional guidance for health decisions.
Related calculators
Apply these concepts with formula-based tools on Calculator Factory.
FAQ
- Is BMI accurate for everyone?
- No. It is a general population screen. Individual health assessment requires more than BMI alone.