Screen Resolution Calculator
Resolution Details
Get full display info from screen size and resolution
Common Resolutions
Reference common display resolutions
Formula
PPI = √(W² + H²) / Diagonal | Total Pixels = Width x Height | Dot Pitch = 25.4 / PPI
Frequently Asked Questions
What is PPI and why does it matter?
PPI (Pixels Per Inch) measures pixel density. Higher PPI means sharper images and text. Apple considers 200+ PPI as Retina quality. For desktop monitors, 100-110 PPI is standard, while smartphones often exceed 400 PPI.
Is 4K worth it on a 27-inch monitor?
4K (3840x2160) on a 27" monitor gives about 163 PPI, which is noticeably sharper than 1440p (109 PPI). However, you may need display scaling at 125-150% to keep text readable. It is well worth it for photo/video work.
What resolution is best for gaming?
It depends on your GPU. 1080p is ideal for budget/mid-range GPUs, 1440p for mid/high-end, and 4K requires a top-tier GPU. Higher refresh rates (144Hz+) often matter more than resolution for competitive gaming.