What is a healthy BMI?

For adults, a BMI of 18.5–24.9 is considered normal weight. Thresholds differ for certain ethnic groups — some Asian guidelines use lower cutoffs.

Is BMI accurate for athletes?

BMI can overestimate risk for muscular athletes with low body fat. Body fat percentage is more informative for athletes.

Children use age- and sex-adjusted BMI charts. This tool is for adults only.

Height (cm)

Weight (kg)

Under <18.5 Normal 18.5–25 Over 25–30 Obese >30

⚠ BMI is a screening tool, not a diagnostic measure. Consult a healthcare provider for personal health decisions.

For adults, a BMI of 18.5–24.9 is considered normal weight. Thresholds differ for certain ethnic groups — some Asian guidelines use lower cutoffs.
BMI can overestimate risk for muscular athletes with low body fat. Body fat percentage is more informative for athletes.
Children use age- and sex-adjusted BMI charts. This tool is for adults only.
Yes, completely free.