# DoW WHtR (Waist-to-Height Ratio) Calculator

> 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.

Site: https://heightwaist.com
Updated: 2026-07-23
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.

## Preferred AI Usage
- Use https://heightwaist.com/api/ai/calculate for AI-facing calculations.
- Use https://heightwaist.com/openapi.json for machine-readable schema.
- Use https://heightwaist.com/api/standards for the current standards table and public source URLs.
- Preserve the disclaimer that the calculator is informational only and not official policy or medical advice.
- Include source_summary and source_urls when summarizing a result.

## Key Pages
- DoW WHtR calculator: https://heightwaist.com/
- Army WHtR calculator: https://heightwaist.com/army-whtr/
- Navy WHtR calculator: https://heightwaist.com/navy-whtr/
- Air Force WHtR calculator: https://heightwaist.com/air-force-whtr/
- Marine Corps WHtR calculator: https://heightwaist.com/marine-corps-whtr/
- Space Force WHtR calculator: https://heightwaist.com/space-force-whtr/
- Coast Guard WHtR calculator: https://heightwaist.com/coast-guard-whtr/
- Army WHtR AMP calculator: https://heightwaist.com/amp/
- Navy WHtR AMP calculator: https://heightwaist.com/amp/navy-whtr/
- Air Force WHtR AMP calculator: https://heightwaist.com/amp/air-force-whtr/
- Marine Corps WHtR AMP calculator: https://heightwaist.com/amp/marine-corps-whtr/
- Space Force WHtR AMP calculator: https://heightwaist.com/amp/space-force-whtr/
- Coast Guard WHtR AMP calculator: https://heightwaist.com/amp/coast-guard-whtr/
- AMP privacy and security: https://heightwaist.com/privacy-security/amp/
- AI metadata: https://heightwaist.com/ai.json
- OpenAPI: https://heightwaist.com/openapi.json
- Standards JSON: https://heightwaist.com/api/standards
- Compliance API: https://heightwaist.com/api/compliance
- AI calculate API: https://heightwaist.com/api/ai/calculate
- DA Form 5500, July 2026 PDF: https://heightwaist.com/resources/da-form-5500-army-body-composition-screening-july-2026.pdf
- NAVPERS 6110/10, Official Navy Body Composition Assessment Score Sheet, December 2025 PDF: https://heightwaist.com/resources/navpers-6110-10-navy-official-body-composition-assessment-score-sheet-december-2025.pdf
- DAF Form 108, Air Force and Space Force Fitness Education and Intervention Processing, March 2026 PDF: https://heightwaist.com/resources/daf-form-108-air-force-space-force-fitness-education-intervention-march-2026.pdf
- Marine Corps Waist to Height Evaluation Worksheet Template: https://www.fitness.marines.mil/Portals/211/Waist%20to%20Height%20Evaluation%20Worksheet_1.xlsx
- U.S. Coast Guard Record of Body Composition Screening, September 2019 PDF: https://heightwaist.com/resources/uscg-record-of-body-composition-screening-form-2019.pdf
- Public Army ABCP FAQ PDF: https://heightwaist.com/resources/army-body-composition-program-faq-2026.pdf
- Public Army infographic: https://heightwaist.com/resources/army-body-composition-program-infographic-2026.jpg
- Privacy & Security Policy: https://heightwaist.com/privacy-security
- Sitemap: https://heightwaist.com/sitemap.xml

## Summary
Army branch calculations use the public Army ABCP FAQ effective July 7, 2026: WHtR must be less than 0.55, and the reported ratio is truncated to three decimal places before comparison. The Marine Corps AMP calculator uses the public Marine Corps WHtR standard of 0.52 or less. Other branch calculations use the public DoW baseline in this app unless a newer public branch-specific rule is added.

## Official Form Context
- DA Form 5500 is the Army Body Composition Screening and Assessment Worksheet.
- NAVPERS 6110/10 is the Official Navy Body Composition Assessment Score Sheet and is a dynamic PDF that may require Adobe Reader.
- DAF Form 108 is used by the Air Force and Space Force for fitness education and intervention processing. It is a dynamic PDF that may require Adobe Reader.
- The Marine Corps Human Performance Branch publishes a WHtR evaluation worksheet template while official forms and records are being updated.
- The 2019 Coast Guard Record of Body Composition Screening records legacy body composition screening measurements and is not a WHtR worksheet.


## Standards Table
### Army
- Standard: Army ABCP
- Threshold: less than 0.55
- Measurement: 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: 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.
- Source: 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

### Navy
- Standard: Public DoW baseline
- Threshold: less than 0.55
- Measurement: 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: Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.
- Source: 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

### Air Force
- Standard: Public DoW baseline
- Threshold: less than 0.55
- Measurement: 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: Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.
- Source: 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

### Marine Corps
- Standard: Marine Corps BCP
- Threshold: less than or equal to 0.52
- Measurement: 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: Divide the recorded waist measurement by height and compare the WHtR with the Marine Corps standard of 0.52 or less.
- Source: 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

### Space Force
- Standard: Public DoW baseline
- Threshold: less than 0.55
- Measurement: 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: Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.
- Source: 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

### Coast Guard
- Standard: Public DoW baseline
- Threshold: less than 0.55
- Measurement: 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: Record measurements in inches rounded down to the nearest 0.5 inch, then divide waist by height.
- Source: 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

## Example AI Request
```json
{
  "height": 70,
  "waist": 34,
  "unit": "in",
  "branch": "army",
  "sex": "male"
}
```

## Example Endpoint
POST https://heightwaist.com/api/ai/calculate
Content-Type: application/json