curl --request GET \
  --url https://v1.api.flux-os.com/measurements/units/conversions \
  --header 'x-api-key: <api-key>' \
  --header 'x-user-id: <api-key>'

{
  "data": [
    {
      "formula": "<string>",
      "id": "<string>",
      "product_category": {
        "name": "<string>",
        "id": "<string>"
      },
      "from_unit": {
        "name": "<string>",
        "abbreviation": "<string>",
        "type": "V",
        "id": "<string>",
        "html_symbol": null
      },
      "to_unit": {
        "name": "<string>",
        "abbreviation": "<string>",
        "type": "V",
        "id": "<string>",
        "html_symbol": null
      }
    }
  ],
  "meta": {
    "current_page": 123,
    "total_pages": 123,
    "total_items": 123,
    "per_page": 123
  }
}