Ideal body weight (Devine / Robinson) API

Estimate ideal body weight from height & sex via the Devine (1974) and Robinson (1983) formulas (base + per-inch-over-5ft). Answers 'what's my ideal weight', 'ideal body weight for 180cm male', 'Devine ideal weight calculator'.

Price$0.01per request

MethodPOST

Route/v1/health/ideal-weight

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

healthideal-weightdevinerobinsonweightfitnessdosingcalculator

API URLhttps://x402.hexl.dev/v1/health/ideal-weight

Integration docs

Example request

{
  "heightCm": 180,
  "sex": "male"
}

Example response

{
  "idealWeightKg": 75,
  "method": "Devine (1974)",
  "devineKg": 75,
  "robinsonKg": 72.6,
  "sex": "male",
  "inputs": {
    "heightCm": 180,
    "inchesOver5ft": 10.9
  }
}

Input schema

{
  "type": "object",
  "required": [
    "heightCm",
    "sex"
  ],
  "properties": {
    "heightCm": {
      "type": "number",
      "examples": [
        180
      ]
    },
    "sex": {
      "type": "string",
      "enum": [
        "male",
        "female"
      ]
    }
  }
}

Output schema

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