{
  "name": "DoW WHtR (Waist-to-Height Ratio) Calculator",
  "description": "Military waist-to-height ratio calculator with public Army, Navy, Air Force, Marine Corps, Space Force, and Coast Guard instructions, body composition forms, references, with API available.",
  "updated": "2026-07-23",
  "homepage_url": "https://heightwaist.com/",
  "llms_txt_url": "https://heightwaist.com/llms.txt",
  "llms_full_url": "https://heightwaist.com/llms-full.txt",
  "openapi_url": "https://heightwaist.com/openapi.json",
  "service_pages": {
    "army_whtr": "https://heightwaist.com/army-whtr/",
    "navy_whtr": "https://heightwaist.com/navy-whtr/",
    "air_force_whtr": "https://heightwaist.com/air-force-whtr/",
    "marine_corps_whtr": "https://heightwaist.com/marine-corps-whtr/",
    "space_force_whtr": "https://heightwaist.com/space-force-whtr/",
    "coast_guard_whtr": "https://heightwaist.com/coast-guard-whtr/"
  },
  "amp_pages": {
    "calculator": "https://heightwaist.com/amp/",
    "army_whtr": "https://heightwaist.com/amp/",
    "navy_whtr": "https://heightwaist.com/amp/navy-whtr/",
    "air_force_whtr": "https://heightwaist.com/amp/air-force-whtr/",
    "marine_corps_whtr": "https://heightwaist.com/amp/marine-corps-whtr/",
    "space_force_whtr": "https://heightwaist.com/amp/space-force-whtr/",
    "coast_guard_whtr": "https://heightwaist.com/amp/coast-guard-whtr/",
    "privacy_and_security": "https://heightwaist.com/privacy-security/amp/"
  },
  "calculator_endpoint": "https://heightwaist.com/api/ai/calculate",
  "standards_endpoint": "https://heightwaist.com/api/standards",
  "army_da_form_5500_url": "https://heightwaist.com/resources/da-form-5500-army-body-composition-screening-july-2026.pdf",
  "navy_navpers_6110_10_url": "https://heightwaist.com/resources/navpers-6110-10-navy-official-body-composition-assessment-score-sheet-december-2025.pdf",
  "air_force_space_force_daf_form_108_url": "https://heightwaist.com/resources/daf-form-108-air-force-space-force-fitness-education-intervention-march-2026.pdf",
  "marine_corps_whtr_worksheet_url": "https://www.fitness.marines.mil/Portals/211/Waist%20to%20Height%20Evaluation%20Worksheet_1.xlsx",
  "coast_guard_body_composition_screening_form_url": "https://heightwaist.com/resources/uscg-record-of-body-composition-screening-form-2019.pdf",
  "official_form_resources": [
    {
      "form_number": "DA Form 5500",
      "title": "DA Form 5500, Army Body Composition Screening and Assessment Worksheet",
      "edition": "July 2026",
      "services": [
        "United States Army"
      ],
      "url": "https://heightwaist.com/resources/da-form-5500-army-body-composition-screening-july-2026.pdf",
      "description": "Army worksheet for recording height, three waist measurements, average waist, WHtR, confirmation measurements, and compliance with Army standards.",
      "encoding_format": "application/pdf",
      "dynamic_pdf_requires_adobe_reader": false
    },
    {
      "form_number": "NAVPERS 6110/10",
      "title": "NAVPERS 6110/10, Official Body Composition Assessment Score Sheet",
      "edition": "December 2025",
      "services": [
        "United States Navy"
      ],
      "url": "https://heightwaist.com/resources/navpers-6110-10-navy-official-body-composition-assessment-score-sheet-december-2025.pdf",
      "description": "Official U.S. Navy Body Composition Assessment score sheet for recording height, weight, waist measurement, WHtR results, and required follow-up assessment data.",
      "encoding_format": "application/pdf",
      "dynamic_pdf_requires_adobe_reader": true
    },
    {
      "form_number": "DAF Form 108",
      "title": "DAF Form 108, Department of the Air Force Fitness Education and Intervention Processing",
      "edition": "March 2026",
      "services": [
        "United States Air Force",
        "United States Space Force"
      ],
      "url": "https://heightwaist.com/resources/daf-form-108-air-force-space-force-fitness-education-intervention-march-2026.pdf",
      "description": "Department of the Air Force form used for fitness education and intervention processing by the U.S. Air Force and U.S. Space Force, including body composition program actions.",
      "encoding_format": "application/pdf",
      "dynamic_pdf_requires_adobe_reader": true
    },
    {
      "form_number": null,
      "title": "U.S. Coast Guard Record of Body Composition Screening",
      "edition": "September 2019",
      "services": [
        "United States Coast Guard"
      ],
      "url": "https://heightwaist.com/resources/uscg-record-of-body-composition-screening-form-2019.pdf",
      "description": "U.S. Coast Guard form for recording weight, circumference value, abdominal circumference, body-fat screening, and overall body composition compliance. This 2019 form is not a WHtR worksheet.",
      "encoding_format": "application/pdf",
      "dynamic_pdf_requires_adobe_reader": false
    },
    {
      "form_number": null,
      "title": "Marine Corps Waist to Height Evaluation Worksheet Template",
      "edition": "2026",
      "services": [
        "United States Marine Corps"
      ],
      "url": "https://www.fitness.marines.mil/Portals/211/Waist%20to%20Height%20Evaluation%20Worksheet_1.xlsx",
      "description": "Official U.S. Marine Corps worksheet template for recording and evaluating waist-to-height ratio measurements.",
      "encoding_format": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "dynamic_pdf_requires_adobe_reader": false
    }
  ],
  "result_sharing": {
    "available": true,
    "method": "User-initiated native device share sheet with clipboard fallback.",
    "shared_fields": [
      "reported WHtR",
      "selected service",
      "informal classification",
      "public site URL"
    ],
    "excluded_fields": [
      "height",
      "waist measurements",
      "sex"
    ]
  },
  "preferred_usage": "Use /api/ai/calculate for deterministic waist-to-height calculations. Include source_summary and source_urls when summarizing.",
  "input_schema": {
    "type": "object",
    "required": [
      "height",
      "waist"
    ],
    "properties": {
      "height": {
        "type": "number",
        "description": "Height in inches or centimeters."
      },
      "waist": {
        "type": "number",
        "description": "Waist circumference in inches or centimeters."
      },
      "unit": {
        "type": "string",
        "enum": [
          "in",
          "cm"
        ],
        "default": "in"
      },
      "branch": {
        "type": "string",
        "enum": [
          "army",
          "navy",
          "air_force",
          "marine_corps",
          "space_force",
          "coast_guard"
        ],
        "default": "army"
      },
      "sex": {
        "type": "string",
        "enum": [
          "male",
          "female"
        ],
        "default": "male"
      }
    }
  },
  "standards": {
    "updated": "2026-07-23",
    "default_branch": "army",
    "branches": [
      {
        "id": "army",
        "label": "Army",
        "standard": {
          "id": "army",
          "label": "Army ABCP",
          "applies_to": "U.S. Army Soldiers and cadets under the Army Body Composition Program public FAQ.",
          "threshold": 0.55,
          "threshold_label": "less than 0.55",
          "measurement_method": "Record height to the nearest 0.50 inch. Measure the waist at the navel three times, rounding each measurement down to the nearest 0.50 inch.",
          "calculation_method": "Average the three waist measurements to three decimal places, divide that average by height, then disregard digits after the third decimal place without rounding the WHtR.",
          "confirmation": "A second WHtR measurement by a different team on the same duty day is required before administrative action.",
          "follow_up": "If the confirmation measurement is still 0.55 or higher, enrollment in ABCP and flagging apply under the public FAQ.",
          "body_fat_cap_percent": null,
          "source_summary": "Army Body Composition Program and Standards FAQ, effective July 7, 2026.",
          "source_urls": [
            "https://heightwaist.com/resources/da-form-5500-army-body-composition-screening-july-2026.pdf",
            "https://heightwaist.com/resources/army-body-composition-program-faq-2026.pdf",
            "https://www.army.mil/e2/downloads/rv7/tyf/ABCP_FAQ.pdf"
          ]
        }
      },
      {
        "id": "navy",
        "label": "Navy",
        "standard": {
          "id": "joint_public_default",
          "label": "Public DoW baseline",
          "applies_to": "Branches without a newer public branch-specific rule in this app.",
          "threshold": 0.55,
          "threshold_label": "less than 0.55",
          "measurement_method": "Measure waist parallel to the floor at the midpoint between the last palpable rib and the top of the iliac crest, typically at or just above the belly button.",
          "calculation_method": "Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.",
          "confirmation": "Follow service-specific public guidance for confirmation and administrative steps.",
          "follow_up": "Public DoW guidance says members at 0.55 or above receive further body-fat calculation under service policy.",
          "body_fat_cap_percent": {
            "male": 18,
            "female": 26
          },
          "source_summary": "Additional Guidance on Military Fitness Standards, effective January 1, 2026.",
          "source_urls": [
            "https://media.defense.gov/2026/Jan/12/2003855613/-1/-1/1/ADDITIONAL-GUIDANCE-ON-MILITARY-FITNESS-STANDARDS.PDF"
          ]
        }
      },
      {
        "id": "air_force",
        "label": "Air Force",
        "standard": {
          "id": "joint_public_default",
          "label": "Public DoW baseline",
          "applies_to": "Branches without a newer public branch-specific rule in this app.",
          "threshold": 0.55,
          "threshold_label": "less than 0.55",
          "measurement_method": "Measure waist parallel to the floor at the midpoint between the last palpable rib and the top of the iliac crest, typically at or just above the belly button.",
          "calculation_method": "Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.",
          "confirmation": "Follow service-specific public guidance for confirmation and administrative steps.",
          "follow_up": "Public DoW guidance says members at 0.55 or above receive further body-fat calculation under service policy.",
          "body_fat_cap_percent": {
            "male": 18,
            "female": 26
          },
          "source_summary": "Additional Guidance on Military Fitness Standards, effective January 1, 2026.",
          "source_urls": [
            "https://media.defense.gov/2026/Jan/12/2003855613/-1/-1/1/ADDITIONAL-GUIDANCE-ON-MILITARY-FITNESS-STANDARDS.PDF"
          ]
        }
      },
      {
        "id": "marine_corps",
        "label": "Marine Corps",
        "standard": {
          "id": "marine_corps",
          "label": "Marine Corps BCP",
          "applies_to": "U.S. Marines under the public Marine Corps Body Composition Program guidance effective January 1, 2026.",
          "threshold": 0.52,
          "threshold_label": "less than or equal to 0.52",
          "measurement_method": "Measure the waist twice at the navel using a self-tensioning tape. Record the lower measurement rounded down to the nearest 0.50 inch.",
          "calculation_method": "Divide the recorded waist measurement by height and compare the WHtR with the Marine Corps standard of 0.52 or less.",
          "confirmation": "Follow current Marine Corps guidance for body-fat evaluation and administrative steps.",
          "follow_up": "Marines who exceed the WHtR standard undergo a body-fat evaluation under current Marine Corps policy.",
          "body_fat_cap_percent": null,
          "source_summary": "Marine Corps Body Composition Program Standards, effective January 1, 2026.",
          "source_urls": [
            "https://www.fitness.marines.mil/BCP_Standards/",
            "https://www.fitness.marines.mil/Portals/211/Waist%20to%20Height%20Evaluation%20Worksheet_1.xlsx"
          ]
        }
      },
      {
        "id": "space_force",
        "label": "Space Force",
        "standard": {
          "id": "joint_public_default",
          "label": "Public DoW baseline",
          "applies_to": "Branches without a newer public branch-specific rule in this app.",
          "threshold": 0.55,
          "threshold_label": "less than 0.55",
          "measurement_method": "Measure waist parallel to the floor at the midpoint between the last palpable rib and the top of the iliac crest, typically at or just above the belly button.",
          "calculation_method": "Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.",
          "confirmation": "Follow service-specific public guidance for confirmation and administrative steps.",
          "follow_up": "Public DoW guidance says members at 0.55 or above receive further body-fat calculation under service policy.",
          "body_fat_cap_percent": {
            "male": 18,
            "female": 26
          },
          "source_summary": "Additional Guidance on Military Fitness Standards, effective January 1, 2026.",
          "source_urls": [
            "https://media.defense.gov/2026/Jan/12/2003855613/-1/-1/1/ADDITIONAL-GUIDANCE-ON-MILITARY-FITNESS-STANDARDS.PDF"
          ]
        }
      },
      {
        "id": "coast_guard",
        "label": "Coast Guard",
        "standard": {
          "id": "joint_public_default",
          "label": "Public DoW baseline",
          "applies_to": "Branches without a newer public branch-specific rule in this app.",
          "threshold": 0.55,
          "threshold_label": "less than 0.55",
          "measurement_method": "Measure waist parallel to the floor at the midpoint between the last palpable rib and the top of the iliac crest, typically at or just above the belly button.",
          "calculation_method": "Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.",
          "confirmation": "Follow service-specific public guidance for confirmation and administrative steps.",
          "follow_up": "Public DoW guidance says members at 0.55 or above receive further body-fat calculation under service policy.",
          "body_fat_cap_percent": {
            "male": 18,
            "female": 26
          },
          "source_summary": "Additional Guidance on Military Fitness Standards, effective January 1, 2026.",
          "source_urls": [
            "https://media.defense.gov/2026/Jan/12/2003855613/-1/-1/1/ADDITIONAL-GUIDANCE-ON-MILITARY-FITNESS-STANDARDS.PDF"
          ]
        }
      }
    ],
    "public_assets": [
      {
        "id": "da-form-5500",
        "title": "DA Form 5500, Army Body Composition Screening and Assessment Worksheet",
        "alternate_name": "DA FORM 5500, JUL 2026",
        "description": "Army worksheet for recording height, three waist measurements, average waist, WHtR, confirmation measurements, and compliance with Army standards.",
        "url": "https://heightwaist.com/resources/da-form-5500-army-body-composition-screening-july-2026.pdf",
        "type": "application/pdf",
        "form_number": "DA Form 5500",
        "edition": "July 2026",
        "service": [
          "United States Army"
        ],
        "about": [
          "Army Body Composition Program",
          "waist-to-height ratio",
          "WHtR",
          "Army body composition screening"
        ],
        "dynamic_pdf_requires_adobe_reader": false,
        "public": true
      },
      {
        "id": "navpers-6110-10",
        "title": "NAVPERS 6110/10, Official Body Composition Assessment Score Sheet",
        "alternate_name": "NAVPERS 6110/10, DEC 2025",
        "description": "Official U.S. Navy Body Composition Assessment score sheet for recording height, weight, waist measurement, WHtR results, and required follow-up assessment data.",
        "url": "https://heightwaist.com/resources/navpers-6110-10-navy-official-body-composition-assessment-score-sheet-december-2025.pdf",
        "type": "application/pdf",
        "form_number": "NAVPERS 6110/10",
        "edition": "December 2025",
        "service": [
          "United States Navy"
        ],
        "about": [
          "Navy Body Composition Assessment",
          "waist-to-height ratio",
          "WHtR",
          "Navy BCA score sheet"
        ],
        "dynamic_pdf_requires_adobe_reader": true,
        "public": true
      },
      {
        "id": "daf-form-108",
        "title": "DAF Form 108, Department of the Air Force Fitness Education and Intervention Processing",
        "alternate_name": "DAF FORM 108, MAR 2026",
        "description": "Department of the Air Force form used for fitness education and intervention processing by the U.S. Air Force and U.S. Space Force, including body composition program actions.",
        "url": "https://heightwaist.com/resources/daf-form-108-air-force-space-force-fitness-education-intervention-march-2026.pdf",
        "type": "application/pdf",
        "form_number": "DAF Form 108",
        "edition": "March 2026",
        "service": [
          "United States Air Force",
          "United States Space Force"
        ],
        "about": [
          "Air Force body composition",
          "Space Force body composition",
          "fitness education",
          "fitness intervention"
        ],
        "dynamic_pdf_requires_adobe_reader": true,
        "public": true
      },
      {
        "id": "uscg-body-composition-screening",
        "title": "U.S. Coast Guard Record of Body Composition Screening",
        "alternate_name": "USCG Body Composition Pilot Screening Form",
        "description": "U.S. Coast Guard form for recording weight, circumference value, abdominal circumference, body-fat screening, and overall body composition compliance. This 2019 form is not a WHtR worksheet.",
        "url": "https://heightwaist.com/resources/uscg-record-of-body-composition-screening-form-2019.pdf",
        "type": "application/pdf",
        "form_number": null,
        "edition": "September 2019",
        "service": [
          "United States Coast Guard"
        ],
        "about": [
          "Coast Guard body composition",
          "abdominal circumference",
          "body-fat screening",
          "USCG weight standards"
        ],
        "dynamic_pdf_requires_adobe_reader": false,
        "public": true
      },
      {
        "id": "marine-corps-whtr-worksheet",
        "title": "Marine Corps Waist to Height Evaluation Worksheet Template",
        "alternate_name": "USMC WHtR Evaluation Worksheet",
        "description": "Official U.S. Marine Corps worksheet template for recording and evaluating waist-to-height ratio measurements.",
        "url": "https://www.fitness.marines.mil/Portals/211/Waist%20to%20Height%20Evaluation%20Worksheet_1.xlsx",
        "type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
        "form_number": null,
        "edition": "2026",
        "service": [
          "United States Marine Corps"
        ],
        "about": [
          "Marine Corps Body Composition Program",
          "waist-to-height ratio",
          "WHtR",
          "Marine Corps body composition"
        ],
        "dynamic_pdf_requires_adobe_reader": false,
        "public": true
      },
      {
        "title": "Army Body Composition Program and Standards FAQ",
        "url": "https://heightwaist.com/resources/army-body-composition-program-faq-2026.pdf",
        "original_url": "https://www.army.mil/e2/downloads/rv7/tyf/ABCP_FAQ.pdf",
        "type": "application/pdf",
        "public": true
      },
      {
        "title": "Army Body Composition Program infographic",
        "url": "https://heightwaist.com/resources/army-body-composition-program-infographic-2026.jpg",
        "original_url": "https://api.army.mil/e2/c/images/2026/07/07/4b1b6544/original.jpg",
        "type": "image/jpeg",
        "public": true
      }
    ]
  },
  "disclaimer": "Informational calculator only. Not official policy, medical advice, or a substitute for service-specific guidance."
}