{
  "pint_version": "0.25",
  "conversion": {
    "input_unit": {
      "name": "square_inch",
      "symbol": "sq_in",
      "dimensionality": "[length] ** 2",
      "base_units": {
        "magnitude": 0.00064516,
        "units": "m ** 2"
      }
    },
    "output_unit": {
      "name": "square_mile",
      "symbol": "sq_mi",
      "dimensionality": "[length] ** 2",
      "base_units": {
        "magnitude": 2589988.110336,
        "units": "m ** 2"
      }
    },
    "affine": {
      "forward": {
        "expression": "y = a * x + b",
        "a": 2.4909766860524435e-10,
        "b": 0.0
      },
      "reverse": {
        "expression": "x = c * y + d",
        "c": 4014489600.0,
        "d": 0.0
      }
    }
  },
  "integrity": {
    "hash_algorithm": "sha256",
    "hash": "c203aae5ead0a5f383e97cd9b61519752772f0bce855fc0a66a11c735413bbf2"
  },
  "metadata": {
    "source_url": "https://convertreference.org/area/square-inch-to-square-mile/",
    "license": "CC0-1.0",
    "license_url": "https://creativecommons.org/publicdomain/zero/1.0/"
  }
}