Guides: read the standard, then check your number
Every guide pairs an explanation with the live calculator that applies to it — no page here is a static wall of text.
What Is WHtR and Why Did the Military Adopt It in 2026?
Waist-to-height ratio explained: the math, why it beats BMI and body-fat %, and the full story of the DoD swit…
Read the guide →Body-Fat Measurement Methods: DEXA, Calipers, BIA & the Navy Formula
Every way to measure body fat, ranked by accuracy, plus which methods the military accepts for the secondary b…
Read the guide →Military Enlistment Body-Composition Standards (2026)
What the Army, Navy, Air Force, Marines, Space Force, and Coast Guard require on the way in: height, weight, W…
Read the guide →ACFT Preparation: Train the Six Events, Unlock the 540 Exemption
A practical training plan for the Army Combat Fitness Test, why 540+ matters for body composition, and what th…
Read the guide →The Navy Body-Fat Formula: How the Tape Test Actually Works
Step-by-step through the circumference formula most branches use for the secondary body-fat evaluation — with …
Read the guide →The Army WHtR Standard Explained (AD 2026-13)
Everything a Soldier needs to know about the new Army waist-to-height screen: the 0.55 line, the 540 exemption…
Read the guide →Marine Corps Body-Composition & Fitness Standards (2026)
Why the Marines run a stricter 0.52 WHtR gate, how the PFT/CFT fit in, and what it means for a Marine on the l…
Read the guide →CPAT Preparation & NFPA 1580 Fitness Standards for Firefighters
Train for the eight CPAT events and understand the new NFPA 1580 aerobic-capacity rules that replaced the fixe…
Read the guide →Police Academy & State POST Fitness Standards: What to Expect
The physical agility tests used by law enforcement agencies, how they vary by state, and a training approach t…
Read the guide →BMI vs WHtR vs Body-Fat Percentage: Which Number Matters?
The three metrics compared side by side — what each measures, where each is used in the military in 2026, and …
Read the guide →Calories for the Mission: BMR & TDEE for Service Members
Why knowing your BMR and TDEE matters for ABCP weight loss, ACFT fueling, and staying strong through a body-co…
Read the guide →FFMI & Lean Body Mass: Muscle vs Fat in Military Standards
Why FFMI explains the muscular soldier who “fails” a weight table but passes WHtR — and how to track lean mass…
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