EmSai Projects - Widescreen: DPI Calculator

DPI Calculator

This calculator should help you find out the optimal DPI/PPI setting for your monitor under Windows Vista/Windows 7/Windows 8,
and any other modern operating system that support DPI scaling. Default for PC is 96 DPI and for Mac it is 72 DPI.

Assumed Resolution:

Assumed Aspect Ratio:

Assumed Current PPI:

Assumed Size:

Assumed Pixel Pitch:

If the assumed details above are wrong then that means your DPI is set wrong compared to your screens physical resolution.
Also, all modern browsers fake the "Assumed" info above and may also be affected by the Zoom setting.
Not all browsers are High DPI aware either. So if 96DPI is assumed above then file a bug report with the browser developers.

Enter the correct screen data below and click the calculate button to "manually" calculate the DPI you should set in your OS. If assumed aspect above is wrong it might affect the calculation.

What is the point of using the correct DPI?

It ensures that text and user interface elements are rendered at their optimal size per the displays physical resolution.
Try to compare this to playing a game at a low and a high resolution, the high resolution will draw what you see in greater detail.
A high DPI also allows the Operating System to use more pixels to anti-alias the text, making letters much smoother and less jagged when displaying text.

The higher the PPI of the manufactured screen, the better resolution it has. The lower the Pixel Pitch the better resolution it has.
Another word for PPI and DPI could just as easily be Pixel Density as that is exactly what all this is about.
If the pixel density is high enough you will not even need anti-aliasing when displaying text, 3D rendered or 2D vector graphics.

Many people end up buying large monitors that may seem to be big, but their physical resolution is less than the screen resolution may give the impression of.
It is not uncommon for a small laptop screen to have a DPI multiple times higher than a huge 30+ inch screen,
in other words "buyer beware" as the saying goes!

The information below should be accurate but may vary slightly depending on your browser,
a modern browser is advised and Javascript must enabled for the test to work,
it is also highly advised that your monitor is set to it's native resolution if possible!

More info about Resolution.
More info about Aspect Ratio.
More info about DPI / PPI.
More info about Pixel Pitch / Dot Pitch.
More info about Pixel Density.
More info about DPI/Pixel pitch of various screens.