{
    "name": "Army Body Composition Calculator",
    "url": "https://calculators.geekmidst.com/calculators/army-body-fat-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/army-body-fat-calculator.md",
    "category": "Health & fitness",
    "description": "Check the US Army body composition standard adopted in July 2026: waist at the navel divided by height must be under 0.55. Replaces the old tape test.",
    "summary": "In July 2026 the US Army replaced its height-and-weight tables and body-fat tape test with a waist-to-height ratio. Soldiers meet the standard when waist at the navel divided by height is under 0.55.",
    "also_called": [
        "Army tape test calculator",
        "Army WHtR calculator",
        "ABCP calculator"
    ],
    "applies_to": "United States",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "units",
            "label": "Units",
            "type": "segmented",
            "default": "metric",
            "options": {
                "metric": "Metric (cm, kg)",
                "us": "US (ft, in, lb)"
            }
        },
        {
            "name": "height_cm",
            "label": "Height",
            "type": "number",
            "default": "175",
            "unit": "cm",
            "shown_when": {
                "units": "metric"
            }
        },
        {
            "name": "height_ft",
            "label": "Height (feet)",
            "type": "number",
            "default": "5",
            "unit": "ft",
            "shown_when": {
                "units": "us"
            }
        },
        {
            "name": "height_in",
            "label": "Height (inches)",
            "type": "number",
            "default": "9",
            "unit": "in",
            "optional": true,
            "shown_when": {
                "units": "us"
            }
        },
        {
            "name": "waist",
            "label": "Waist at the navel",
            "type": "number",
            "default": "95"
        }
    ],
    "outputs": [
        {
            "key": "whtr",
            "label": "Waist-to-height ratio",
            "format": "number"
        },
        {
            "key": "result",
            "label": "Army standard",
            "format": "text"
        },
        {
            "key": "max_waist",
            "label": "Waist must be under (cm or in)",
            "format": "number"
        },
        {
            "key": "margin",
            "label": "Margin to the limit (cm or in; negative = over)",
            "format": "number"
        }
    ],
    "formula": {
        "text": "WHtR = waist at the navel ÷ height (same units);  meets the standard if WHtR < 0.55;  waist limit = 0.55 × height",
        "variables": {
            "waist": "circumference at the navel (belly button)",
            "height": "standing height in the same unit"
        }
    },
    "worked_example": {
        "inputs": {
            "units": "metric",
            "height_cm": "175",
            "height_ft": "5",
            "height_in": "9",
            "waist": "95"
        },
        "steps": [
            "WHtR = 95 ÷ 175 = 0.543.",
            "0.543 is under 0.55, so this meets the standard.",
            "Waist limit = 0.55 × 175 = 96.25 cm; this waist is 1.25 cm under it."
        ],
        "result": "A soldier 175 cm tall with a 95 cm waist has a ratio of 0.543 and meets the Army standard; the waist must stay under about 96.3 cm."
    },
    "interpretation": "A ratio of 0.55 or higher leads to a confirmation measurement and enrolment in the Army Body Composition Program. This calculator is a self-check only; the official result is the one recorded by your unit using the Army’s measuring procedure.",
    "assumptions": [
        "US Army standard announced 7 July 2026: waist at the navel divided by height must be under 0.55.",
        "The same limit is applied to all soldiers; the announcements give no age or sex adjustments."
    ],
    "limitations": [
        "Measuring technique (tape position, breathing, rounding) follows Army procedure, which is not reproduced here.",
        "Policy can change and exemptions may apply; check the current Army directive and your unit before relying on the result.",
        "Does not estimate body fat percentage; the Army no longer uses the circumference body-fat equations for this standard."
    ],
    "rules": {
        "jurisdiction": "United States Army",
        "effective_from": "2026-07-07",
        "authority": "U.S. Department of the Army",
        "checked": "2026-10-29",
        "review_after": "2027-04-30"
    },
    "faqs": [
        {
            "question": "Does the Army still use the neck-and-waist tape test?",
            "answer": "No. Army announcements in July 2026 say the waist-to-height ratio replaces the height-and-weight tables, the circumference-based tape test and supplemental body-fat assessments."
        },
        {
            "question": "Where exactly is the waist measured?",
            "answer": "At the navel (belly button). Height and waist must be in the same unit; the ratio has no units."
        },
        {
            "question": "Can I still estimate my body fat?",
            "answer": "Yes, for your own tracking: the Body Fat Calculator uses the US Navy circumference equations, but that figure is not the Army standard."
        }
    ],
    "sources": [
        {
            "title": "U.S. Army: Army modifies body composition program, adopts waist-to-height ratio (7 July 2026)",
            "url": "https://www.army.mil/article/293753"
        },
        {
            "title": "U.S. Army: The full measure — the Army’s new WHtR standard",
            "url": "https://www.army.mil/article/295487/the_full_measure_the_armys_new_whtr_standard"
        }
    ],
    "related": [
        {
            "name": "Body Fat Calculator",
            "url": "https://calculators.geekmidst.com/calculators/body-fat-calculator"
        },
        {
            "name": "Healthy Weight Calculator",
            "url": "https://calculators.geekmidst.com/calculators/healthy-weight-calculator"
        },
        {
            "name": "BMI Calculator",
            "url": "https://calculators.geekmidst.com/calculators/bmi-calculator"
        },
        {
            "name": "Pace Calculator",
            "url": "https://calculators.geekmidst.com/calculators/pace-calculator"
        }
    ],
    "disclaimer": "This is a general screening estimate for adults, not medical advice or a diagnosis. Talk to a qualified health professional about your health.",
    "publisher": "GM¹X CalcVerse"
}