Waist-to-hip & waist-to-height ratios API

Compute waist-to-hip ratio (WHO sex thresholds 0.90 male / 0.85 female) and waist-to-height ratio (0.5 elevated, 0.6 high) with cardiovascular-risk bands. Answers 'what's my waist-to-hip ratio', 'is my waist-to-height ratio healthy', 'WHR cardiovascular risk'.

Price$0.01per request

MethodPOST

Route/v1/health/waist-ratios

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

healthwaist-hipwaist-heightratiocardiovascularriskwhocalculator

API URLhttps://x402.hexl.dev/v1/health/waist-ratios

Integration docs

Example request

{
  "waistCm": 90,
  "hipCm": 100,
  "heightCm": 180,
  "sex": "male"
}

Example response

{
  "inputs": {
    "waistCm": 90,
    "hipCm": 100,
    "heightCm": 180
  },
  "waistToHipRatio": 0.9,
  "whrRisk": "elevated",
  "whrThreshold": 0.9,
  "sex": "male",
  "waistToHeightRatio": 0.5,
  "whtrRisk": "elevated",
  "method": "Waist-to-hip (WHO) & waist-to-height ratio"
}

Input schema

{
  "type": "object",
  "required": [
    "waistCm"
  ],
  "properties": {
    "waistCm": {
      "type": "number",
      "examples": [
        90
      ]
    },
    "hipCm": {
      "type": "number",
      "description": "With 'sex' enables waist-to-hip ratio",
      "examples": [
        100
      ]
    },
    "heightCm": {
      "type": "number",
      "description": "Enables waist-to-height ratio",
      "examples": [
        180
      ]
    },
    "sex": {
      "type": "string",
      "enum": [
        "male",
        "female"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}