Re: [Freetype] HELP REQUEST - font point size to pixel formula

[Ed Keith]

Hi Sam,

Most people today use the PostScript definition for typographic points as 72 
points/inch (the old traditional "BC" definition (Before Computers) was 
actually closer to 72.27 points/inch).  You need to know the dots-per-inch 
(DPI, or pixels-per-inch) resolution of device you're working with to convert 
from typographic points to pixels, and vice-versa:

       pixelSize = (pointSize * DPI) / 72;

Hope that helps,
Ed Keith



At 06:29 AM 7/11/01, Chapman Sam wrote:
>Hi all,
>
>I can't remember off the top of my head but does anyone have the formula
>that relates font point size with pixel size.
>
>If anyone has it to hand or a URL I'd appreciate being sent it to save me
>tracking it down.
>
>Thanks in advance.
>
>Sam Chapman