curl --request POST \
  --url https://api.iotools.cloud/v1/tool/height-converter \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "heightUnit": "cm",
  "heightCm": "170",
  "heightM": "1.70",
  "heightFeet": "5",
  "heightInches": "7"
}
'

{
  "tool": "height-converter",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "unit": "Centimeters",
        "value": "170 cm"
      },
      {
        "unit": "Meters",
        "value": "1.7 m"
      },
      {
        "unit": "Feet & Inches",
        "value": "5 ft 6.9 in"
      },
      {
        "unit": "Total inches",
        "value": "66.93 in"
      }
    ],
    "reference": [
      {
        "compared-to": "US adult male average (175.3 cm, 5 ft 9 in)",
        "difference": "5.3 cm shorter"
      },
      {
        "compared-to": "US adult female average (161.3 cm, 5 ft 3.5 in)",
        "difference": "8.7 cm taller"
      },
      {
        "compared-to": "World adult male average (171 cm, 5 ft 7.3 in)",
        "difference": "1 cm shorter"
      },
      {
        "compared-to": "World adult female average (159 cm, 5 ft 2.6 in)",
        "difference": "11 cm taller"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}