bmi-calculator.net

{
  "type": "object",
  "properties": {
    "gender": {
      "type": "string",
      "enum": [
        "male",
        "female"
      ],
      "description": "Biological sex."
    },
    "waist_cm": {
      "type": "number",
      "description": "Waist circumference in cm. Provide cm or inches."
    },
    "waist_inches": {
      "type": "number",
      "description": "Waist circumference in inches."
    },
    "neck_cm": {
      "type": "number",
      "description": "Neck circumference in cm."
    },
    "neck_inches": {
      "type": "number",
      "description": "Neck circumference in inches."
    },
    "hip_cm": {
      "type": "number",
      "description": "Hip circumference in cm (required for females)."
    },
    "hip_inches": {
      "type": "number",
      "description": "Hip circumference in inches (required for females)."
    },
    "height_cm": {
      "type": "number",
      "description": "Height in cm. Provide cm or feet+inches."
    },
    "height_feet": {
      "type": "number",
      "description": "Height feet component."
    },
    "height_inches": {
      "type": "number",
      "description": "Height inches component."
    }
  },
  "required": [
    "gender"
  ]
}