Sub ConvertByteTags() ' This code will navigate down column B, starting at row 2 ' and replace every GB, KB and MB value with its equivalent extended value Dim iRow As Integer Dim strValue As String Dim strSizeType As String Dim dblNewValue As Double Const ConversionFactor As Integer = 1024 ' 1024 iRow = 2 Do strValue = Cells(iRow, 2).Value If strValue = "" Then Exit Do End If strSizeType = Right(strValue, 2) Select Case strSizeType Case "TB" ' terrabytes dblNewValue = Val(strValue) * ConversionFactor Case "GB" ' gigabytes dblNewValue = Val(strValue) * 1 Case "MB" ' megabytes dblNewValue = Val(strValue) / ConversionFactor Case "KB" ' kilobytes dblNewValue = Val(strValue) / ConversionFactor / ConversionFactor Case Else dblNewValue = Val(strValue) / ConversionFactor / ConversionFactor / ConversionFactor End Select Cells(iRow, 3).Value = dblNewValue iRow = iRow + 1 Loop MsgBox "Cells converted into GB", vbOKOnly Or vbInformation End Sub