monitor dpi calculator for gimp and photoshop application
the information you enter here runs only on your browser on your machine, no data is transmitted to a server unless you use bookmark URL button, then it submits to same page (nothing active on server side) and builds a URL.
These default settings are for a 19" 4:3 crt monitor that has been adjusted.
get out your measuring tape. the manufacturer's listed diagonal inches are not accurate and only measure from the case corners when I need is diagonal pixel area measurement. they measure the bezel usually. measure the diagonal resolution of the video part. be careful with the measuring tape to avoid touching the screen. I usually just use my fingers to hold it on the inside corners.
to get x inches from x px, multiply by x px*x dpi. same for y:
to get y inches from y px, multiply by y px*y dpi.
apple and cell phone retina displays are 300dpi. Toshiba Retina displays are 367dpi. to give you an idea of the resolution of a 23" monitor, 20 1/16"x11 1/4"@367dpi=7362x4128 pixels, 20 1/16"x11 1/4"@300dpi=6018x3375 pixels
my older 4:3 crt visual inches example is 27 10/16" x 10 1/4" and the display was 1280x1024. my HD 1920x1080 23" monitor's visual inches are 20 1/16" x 11 1/4".
a 32" tv is 27.5" wide. a 23" monitor is 23×sqrt(337)/16=" wide