This is a very good website

It isnt very accurate

i have a 16.5 inch screen, had to use the 14.5 inch setting for it to be accurate..

I have 14.1" WVGA with optimal recommended resolution. The picture is near to close. I have got this phone screen 4" in measurements, wheather this phone comes with 4.3" screen. I have to change the required screen size to 13" to get the actual screen size.

mybe it should ask screen resolution also..