curl --request POST \
  --url https://api.iotools.cloud/v1/tool/map-scale-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "mode": "ratio",
  "mapDistance": "5",
  "mapUnit": "cm",
  "groundDistance": "1.2",
  "groundUnit": "km"
}
'

{
  "tool": "map-scale-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "result": [
      {
        "metric": "Scale ratio",
        "value": "1 : 24,000"
      },
      {
        "metric": "Representative fraction",
        "value": "1/24,000"
      },
      {
        "metric": "Verbal",
        "value": "1 cm on the map = 240.000 m in reality"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}