curl --request POST \
  --url https://api.iotools.cloud/v1/tool/power-converter \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "value": "1",
  "fromUnit": "kilowatt",
  "toUnit": "all",
  "precision": "4"
}
'

{
  "tool": "power-converter",
  "tool_version": "1.0.1",
  "outputs": {
    "result": "",
    "table": [
      {
        "unit": "Watt (W)",
        "value": "1000"
      },
      {
        "unit": "Milliwatt (mW)",
        "value": "1000000"
      },
      {
        "unit": "Kilowatt (kW)",
        "value": "1"
      },
      {
        "unit": "Megawatt (MW)",
        "value": "0.001"
      },
      {
        "unit": "Gigawatt (GW)",
        "value": "0"
      },
      {
        "unit": "Horsepower (hp)",
        "value": "1.341"
      },
      {
        "unit": "Metric Horsepower (hp(M))",
        "value": "1.3596"
      },
      {
        "unit": "Kilocalories per Hour (kcal/h)",
        "value": "859.8452"
      },
      {
        "unit": "British Thermal Units per Hour (BTU/h)",
        "value": "3412.1416"
      },
      {
        "unit": "Foot-pounds per Second (ft·lbf/s)",
        "value": "737.5621"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}