Hi, I assume by the leading zeros that the cell is formatted as text.
Try this code, which assumes that your data is in cell E2 Sub InsertComma() A = 8 B = Len(Range("E2")) Do Until A > B B = Len(Range("E2")) C = Left(Range("E2"), A) D = Right(Range("E2"), (B - A)) Range("E2") = C & "," & D A = A + 9 Loop End Sub To apply this to lots of data, you will need to include it in a loop to go thru all cells in your range. Regards - Dave. > Date: Wed, 12 May 2010 09:44:41 -0700 > Subject: $$Excel-Macros$$ Insert comma every 8 characters with random length > cells > From: jorgenso...@gmail.com > To: excel-macros@googlegroups.com > > I need a formula that inserts a comma every 8 characters in a cell. > The cell length could be from 8 to over 3000 characters. In this case, > the LEFT, MID, and RIGHT does not work because of random length cells > and the amount of characters. Any help would be appreciated. > > Example: > > 000020480000204900002050 > > would be > > 00002048,00002049,00002050, etc. > > -- > ---------------------------------------------------------------------------------- > Some important links for excel users: > 1. Follow us on TWITTER for tips tricks and links : > http://twitter.com/exceldailytip > 2. Join our LinkedIN group @ http://www.linkedin.com/groups?gid=1871310 > 3. Excel tutorials at http://www.excel-macros.blogspot.com > 4. Learn VBA Macros at http://www.quickvba.blogspot.com > 5. Excel Tips and Tricks at http://exceldailytip.blogspot.com > > To post to this group, send email to excel-macros@googlegroups.com > > <><><><><><><><><><><><><><><><><><><><><><> > HELP US GROW !! > > We reach over 6,800 subscribers worldwide and receive many nice notes about > the learning and support from the group.Let friends and co-workers know they > can subscribe to group at > http://groups.google.com/group/excel-macros/subscribe _________________________________________________________________ Need a new place to live? Find it on Domain.com.au http://clk.atdmt.com/NMN/go/157631292/direct/01/ -- ---------------------------------------------------------------------------------- Some important links for excel users: 1. Follow us on TWITTER for tips tricks and links : http://twitter.com/exceldailytip 2. Join our LinkedIN group @ http://www.linkedin.com/groups?gid=1871310 3. Excel tutorials at http://www.excel-macros.blogspot.com 4. Learn VBA Macros at http://www.quickvba.blogspot.com 5. Excel Tips and Tricks at http://exceldailytip.blogspot.com To post to this group, send email to excel-macros@googlegroups.com <><><><><><><><><><><><><><><><><><><><><><> HELP US GROW !! We reach over 6,800 subscribers worldwide and receive many nice notes about the learning and support from the group.Let friends and co-workers know they can subscribe to group at http://groups.google.com/group/excel-macros/subscribe