A question about base conversion came up recently. This presents a good opportunity to write a practical example using some of these functions. It makes good sense to post examples here. I have made a couple of modifications to my original code after running a few tests. #include 'operator64.au3' Func DecToBase($iInt, $iBase) $iInt = __Integer64($iInt) If @error Or $iInt < 0 Then Return SetError(1, 0, '') ; positive integers only $iBase = __Integer6