Originally Posted by
Crankycrank
In your case just enter 30 (or 46) in the MIN: box and 30 (or 46) in the MAX: box at the top of the page.
Yes, got that, but it then lists every ratio for every potential chainring between 30 and 46. That displays a lot of useless info as nobody has that type of system. It wants to just show the ratio for the 1,2 or 3 chainrings used, as Sheldons gear calculator shows.