How can I draw objects in pixels and not in inches?

[Guest]

In Excel I am trying to draw lines, boxes, and cubes and than going to the
format picture tab and trying to resize them in pixels. It only lets me do
it in inches. Is there any way to change this from inches to pixels?

Or, is there a formula I can use to convert my pixel mesurements to inches?

 

[JE McGimpsey]

Pixels per inch depend on the user's screen resolution and zoom. There
are a fixed 72 *points* per inch, and you can set the dimensions of
drawing objects in points (e.g., enter 72pt instead of 1").

Historically, standard Mac screen ppi (pixels per inch) is 72, so points
and pixels are equivalent. Standard Windows ppi is 96, so 1" = 72 pts =
96 pixels. But depending on your screen settings, YMMV.