> It never occurred to me that it does not seem possible to display file
> size in bytes when the size is too large. It automatically converts to
> Kb, when size length > 12.
>
> As WinRar displays size files in bytes to much larger length, there is
> a visual discrepancy between the two programs.

Indeed, but filename display has always been the major focus (hence the Alt-Left/Right functionality), and the KB display of size, in line with Explorer (an admittedly poor yardstick, but certainly the 'popular' one).

Size already expands from a default format of 9999,999 to 999,999,999 when going wider than 80 characters (1 space + 11 for the number).

Given that most users are nowadays using much wider configurations, I can add a new format for 9,999,999,999 (which only needs 2 extra characters) when 84 characters wider.