PPI of a 4K 27-Inch Monitor

A 3840×2160 (4K UHD) display on a 27-inch screen achieves approximately 163.18 PPI.

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How to use this tool

Enter horizontal resolution, vertical resolution and screen diagonal in the fields above.
Results update instantly as you type — or click Calculate.
Read your pixel density and the full breakdown beneath it.

Find out the pixel density of a 4K UHD monitor at 27 inches to determine whether it qualifies as a Retina-class display.

Frequently asked questions

What is a good PPI for a monitor?: 90–100 PPI is standard for desktop monitors at typical viewing distances. 140+ PPI gives noticeably sharper text. 220+ PPI is Retina-class.