Army Body Composition Calculator Online

Your measurements

Choose your units, then enter the details you want to use.

Your estimate will appear here

Complete the relevant fields and select Calculate. Changes to your inputs clear the previous result.

Educational estimates, with their equations and assumptions. They do not diagnose a condition or prescribe a treatment.

Method, assumptions & sources

Who this is for

Adult educational reference. Current Army policy and individual eligibility must be checked with official personnel.

How it works

Waist-to-height ratio = navel circumference ÷ height after conversion to the same unit. Army Directive 2026-13 replaced body-fat tape equations in July 2026. Policy references a ratio below 0.55, but this calculator does not apply official personnel measurement or rounding procedures.

Keep in mind

This is a waist-to-height ratio, not a body-fat percentage. Obsolete tape percentages are not presented as current policy.
No military pass/fail, enlistment or health diagnosis is issued.

Sources

US Army (July 2026): new waist-to-height body composition standard (opens in a new tab)