How to set a font size and width based on font size we assign in pt ?

Hello,

I want to covert font size in to height and width format.

i have a requirement where i will provide UI and we can set font size (in pt) and then i will Prepare a zebra command based on UI parameters.

i am using this line for setting fonts in zpl command : ^A2N,14,8

So for example i will select 12 pt then what could be the height and width in ^A2N command line ?

Please answer here if anybody have any idea.