BMI for Enlistment Age (13–19)
A rough BMI check for applicants still in the enlistment-age window.
BMI for the enlistment-age window (13–19). Adults and teens share the BMI formula, but teens are officially judged on CDC age/sex BMI percentiles.
Result
About this calculator
BMI for ages 13–19. Teens share the adult BMI formula but are judged on CDC age- and sex-specific percentile charts.
The formula
BMI = weight(kg) ÷ height(m)², then plotted on CDC BMI-for-age percentiles by sex.
Frequently asked questions
Q: Why percentiles for teens?
A: Teen bodies change fast; a fixed cutoff mislabels normal growth, so percentiles compare to same-age, same-sex peers.
Q: Is this the official enlistment screen?
A: No. The official medical screen uses CDC BMI-for-age charts, not adult cutoffs. Use this as a rough check.
Q: What if BMI is high but athletic?
A: High muscle can raise teen BMI; the percentile and a clinician review decide the actual status.
How to read the result
Adolescent weight status is read against growth charts rather than fixed adult cutoffs, because a fourteen-year-old is still changing shape and a fixed threshold would misclassify a large share of ordinary development. A percentile places the measurement against other people of the same age and sex, so a value that would look high for an adult can be unremarkable for a growing teenager.
For enlistment the practical point is that services publish accession ranges, and a recruiter applies them to the applicant as they are rather than to a percentile band. Treat this tool as orientation: it shows roughly where the number falls for the age, which is useful for planning a training and nutrition timeline before an application. A clinician, not a calculator, is the right person to interpret a growth trend.