Format-FileSize.ps1

<#
$Metadata = @{
	Title = "Format File Size"
	Filename = "Format-FileSize.ps1"
	Description = ""
	Tags = "powershell, function, format, file, size"
	Project = ""
	Author = "Janik von Rotz"
	AuthorContact = "http://janikvonrotz.ch"
	CreateDate = "2013-11-14"
	LastEditDate = "2013-11-14"
	Url = ""
	Version = "1.0.0"
	License = @'
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Switzerland License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/ch/ or 
send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
'@
}
#>

function Format-FileSize{

<#
.SYNOPSIS
    Format FileSize.

.DESCRIPTION
	Format FileSize.

.PARAMETER  Size
	Integer to format.

.EXAMPLE
	PS C:\> Format-FileSize 10000
    9.77 kB

#>

	[CmdletBinding()]
	param(        
		[Parameter(Position=0, Mandatory=$true)]
		[int]
		$Size
	)
    
    #--------------------------------------------------#
    # main
    #--------------------------------------------------#
	
    If($Size -gt 1TB) {[string]::Format("{0:0.00} TB", $size / 1TB)}
    ElseIf($Size -gt 1GB) {[string]::Format("{0:0.00} GB", $size / 1GB)}
    ElseIf($Size -gt 1MB) {[string]::Format("{0:0.00} MB", $size / 1MB)}
    ElseIf($Size -gt 1KB) {[string]::Format("{0:0.00} kB", $size / 1KB)}
    ElseIf($Size -gt 0)   {[string]::Format("{0:0.00} B", $size)}
    Else{""}
}# function end