How big is a 27 inch monitor?

A 27" monitor (16:9) is about 597mm (23.5") wide and 336mm (13.2") tall. At 2560×1440 resolution, it has about 109 PPI.

What is the difference between 1080p and 4K?

1080p is 1920×1080 (2.07M pixels), 4K is 3840×2160 (8.3M pixels). 4K has 4× more pixels, resulting in sharper images.

Diagonal Size (inches)

Aspect Ratio

Resolution (Width)

Resolution (Height)

Diagonal: Screen size is measured diagonally, corner to corner, in inches.

PPI (Pixels Per Inch): Higher PPI means sharper images. Retina displays typically have 200+ PPI.

Common resolutions: 1080p (1920×1080), 1440p (2560×1440), 4K (3840×2160).