Body Surface Area (Du Bois / Mosteller) API

Compute Body Surface Area in m^2 via the Du Bois formula (0.007184·kg^0.425·cm^0.725) plus the Mosteller √(cm·kg/3600) cross-check — the figure used for chemotherapy and drug dosing. Answers 'what's my body surface area', 'BSA for 80kg/180cm', 'Du Bois body surface area'.

Price$0.01per request

MethodPOST

Route/v1/health/bsa

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

healthbsabody-surface-areadu-boismostellerdosingclinicalcalculator

API URLhttps://x402.hexl.dev/v1/health/bsa

Integration docs

Example request

{
  "weightKg": 80,
  "heightCm": 180
}

Example response

{
  "bsaM2": 1.996,
  "formula": "Du Bois: 0.007184 * kg^0.425 * cm^0.725",
  "mostellerM2": 2,
  "inputs": {
    "weightKg": 80,
    "heightCm": 180
  }
}

Input schema

{
  "type": "object",
  "required": [
    "weightKg",
    "heightCm"
  ],
  "properties": {
    "weightKg": {
      "type": "number",
      "examples": [
        80
      ]
    },
    "heightCm": {
      "type": "number",
      "examples": [
        180
      ]
    }
  }
}

Output schema

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