BMI & Enlistment Screen
BMI as a first-screen proxy, with the accession BMI ranges services publish for applicants.
Body Mass Index with the accession context. The Air Force screens roughly BMI 17.5–27.5; the Coast Guard uses 19.0–27.5.
Result
About this calculator
Body Mass Index (BMI) is weight divided by height squared — a quick first-screen for underweight, normal, overweight, or obesity.
The formula
BMI = weight(kg) ÷ height(m)². Under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese.
Frequently asked questions
Q: What BMI ranges do the services use?
A: Accession screens vary: the Air Force is roughly 17.5–27.5, the Coast Guard 19.0–27.5. Confirm with a recruiter.
Q: Is BMI enough on its own?
A: No. In 2026 the services use Waist-to-Height Ratio, not BMI, for in-service composition screening.
Q: Does BMI distinguish muscle from fat?
A: No. A muscular person can show a high BMI with low body fat, which is why services add circumference screens.
How to read the result
BMI is a population screen that works well across groups and poorly on individuals. It was built to describe how weight scales with height in a large sample, so it ignores the thing that most interests a service member: whether the mass is muscle or fat. A trained recruit with a heavy frame can sit in the overweight band with a waist that clears every gate, while a lighter person can sit in the normal band and still carry fat in the abdominal region.
That mismatch is why the in-service screen moved to a waist measure in 2026. BMI retains a role for applicants, because accession standards are published as BMI ranges and a recruiter applies them before any tape comes out. Read this figure as the first filter it was designed to be rather than as a verdict, and always pair it with the waist-to-height ratio to see the part of the picture the two measures disagree about.