In Excel find 5 digit number and replace with leading zero

[CDPalmer]

I have a column of 5 digit numbers which I would like to replace with the
same number with a leading zero.

 

[Mike H]

Hi,

Apply a custom format of 000000 that's 6 zeroes

Mike

 

[Fred Smith]

If you want to *display* the leading zero, use a custom format of 000000
(that's 6 zeros)

If you want the leading zero stored in the spreadsheet, convert your numbers
to text using:
=text(a1,"000000")

Regards,
Fred.