Get a random decimal number between 0 and 1 in PowerShell

Get-Random -Maximum ([Double]1)

How does this work? The Get-Random cmdlet returns a Double (that’s a decimal number) when the Maximum parameter is a Double. If we just wrote -Maximum 1, then PowerShell would interpret the 1 as an integer. So we cast the 1 as a Double by writing it as [Double]1. Since [Double]1 is not a simple value or variable, PowerShell will misinterpret this as a parameter. So we wrap if in parentheses to get: ([Double]1). This grouping tells PowerShell to evaluate it first, then use that result as the parameter.

Minimum defaults to 0, so we don’t need to specify it.

How this helps!


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