Hi Ranga,

I could be wrong, but I don't believe Excel actually rounds past the 15th digit, but truncates. I'm pretty sure you're not getting past the 15 digit limitation. You might find these interesting:

http://support.microsoft.com/kb/78113

http://support.microsoft.com/kb/158071

http://blogs.msdn.com/excel/archive/...g-answers.aspx

Mark