Scoring Methodology & Verification Protocol
How CombatCalcs scores on the official military lookup tables.
CombatCalcs enforces a strict zero-drift verification protocol. Every scoring formula and conversion matrix is derived from primary source government publications (DA Form 705-TEST, MCO 6100.13A, OPNAVINST 6110.1L, DAFMAN 36-2905, and DoD Instruction 1308.3) and verified with independent unit tests.
Primary Source Authorities
Our scoring algorithms are reconciled against the following active military instructions:
| Branch / Area | Governing Regulation | Standard Scorecard Form | Reconciliation Cadence |
|---|---|---|---|
| U.S. Army | Army FM 7-22 & Army Directive 2023-08 | DA Form 705-TEST | Quarterly regulatory audit |
| U.S. Marine Corps | Marine Corps Order 6100.13A (w/ Change 1-4) | NAVMC 11622 | Annual review |
| U.S. Navy | OPNAVINST 6110.1L Physical Readiness Program | NAVPERS 6110/3 | Semi-annual cycle audit |
| U.S. Air Force | DAFMAN 36-2905 Personnel Fitness Program | AF Form 4446 | Annual review |
| DoD Body Fat | DoD Instruction 1308.3 Physical Fitness Program | Service-specific body fat worksheet | Quarterly policy audit |
DoD Body Fat Circumference Equations
Circumference body fat percentage calculations are computed in inches using the following official logarithmic formulas:
Male Equation:
% Body Fat = 86.010 x log10(Waist - Neck) - 70.041 x log10(Height) + 36.76
Female Equation:
% Body Fat = 163.205 x log10(Waist + Hip - Neck) - 97.684 x log10(Height) - 78.387
In accordance with DoD instructions, the raw result is rounded to the nearest whole integer. Decimal values of 0.5 or greater round up to the next full percent.