curl --request POST \
  --url https://api.iotools.cloud/v1/tool/data-transfer-time-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fileSize": "1",
  "fileSizeUnit": "GB",
  "bandwidth": "100",
  "bandwidthUnit": "Mbps",
  "protocol": "TCP",
  "efficiency": "80"
}
'

{
  "tool": "data-transfer-time-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "result": [
      {
        "metric": "Transfer time",
        "value": "1 minute, 53.03 seconds"
      },
      {
        "metric": "In seconds",
        "value": "113.0255 s"
      },
      {
        "metric": "Effective speed",
        "value": "76.00 Mbps"
      },
      {
        "metric": "Applied efficiency",
        "value": "76%"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}