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Function ConvertBytes(ByRef anBytes)
    Dim lnSize          ' File Size To be returned
    Dim lsType          ' Type of measurement (Bytes, KB, MB, GB, TB)
    
    Const lnBYTE = 1
    Const lnKILO = 1024                     ' 2^10
    Const lnMEGA = 1048576                  ' 2^20
    Const lnGIGA = 1073741824               ' 2^30
    Const lnTERA = 1099511627776            ' 2^40
    '    Const lnPETA = 1.12589990684262E+15        ' 2^50
    '    Const lnEXA = 1.15292150460685E+18        ' 2^60
    '    Const lnZETTA = 1.18059162071741E+21    ' 2^70
    '    Const lnYOTTA = 1.20892581961463E+24    ' 2^80
    
    If anBytes = "" Or Not IsNumeric(anBytes) Then Exit Function
    
    If anBytes < 0 Then Exit Function   
'    If anBytes < lnKILO Then
'        ' ByteConversion
'        lnSize = anBytes
'        lsType = "bytes"
'    Else        
        If anBytes < lnMEGA Then
            ' KiloByte Conversion
            lnSize = (anBytes / lnKILO)
            lsType = "kb"
        ElseIf anBytes < lnGIGA Then
            ' MegaByte Conversion
            lnSize = (anBytes / lnMEGA)
            lsType = "mb"
        ElseIf anBytes < lnTERA Then
            ' GigaByte Conversion
            lnSize = (anBytes / lnGIGA)
            lsType = "gb"
        Else
            ' TeraByte Conversion
            lnSize = (anBytes / lnTERA)
            lsType = "tb"
        End If
'    End If
    ' Remove fraction
    'lnSize = CLng(lnSize)
    lnSize = FormatNumber(lnSize, 2, True, False, True)
    
    ' Return the results
    ConvertBytes = lnSize & " " & lsType
End Function
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