Get-Content -Raw -Path <my_json_file>.json | ConvertFrom-Json

Syntax:

$my_file = Get-Content -Raw -Path .\<my_json_file>.json | ConvertFrom-Json

or to separate for piping further

( Get-Content -Raw -Path .\<my_json_file>.json | ConvertFrom-Json )

Example:

Input JSON file

{
    "fruit": "Apple",
    "size": "Large",
    "color": "Red"
}

Powershell Command

( Get-Content -Raw -Path .\fruit.json | ConvertFrom-Json )

Results

fruit size  color
----- ----  -----
Apple Large Red