geometry in characters?

[codr1]

Is there a conversion between the number of characters and the length in pixels? E,g, if I want an image that is 30 chars wide and 10 lines long - that would be say 240 x 160 pixels?

[j4james]

On a real VT340, and genuine terminal emulators, the size of a character is 10x20 pixels (at least in 80 column mode), so 30 chars wide and 10 lines long will be 300 x 200 pixels.

However, in most modern terminals, the character size will depend on your font size, so you'll have to query the terminal to determine the size in pixels.