Practical measurement guide
Screen Tools
Use screen measurement tools for diagonal size, centimeters, aspect ratio, width, height, and PPI.
Screen tools calculate diagonal size, width, height, aspect ratio, and PPI from user-entered measurements.
in
Common sizes
15.6-inch 16:9 display
Approximate visible panel dimensions, excluding the bezel and casing.
Width13.6 in34.54 cm
Height7.65 in19.43 cm
Diagonal15.6 in39.624 cm
15.6 in × 2.54 = 39.624 cm diagonal
Screen measurement hub
Screen pages focus on calculations from user-entered diagonal size, aspect ratio, and resolution. They do not invent branded product dimensions.
Diagonal, width, height, and PPI
Diagonal size converts directly from inches to centimeters. Width and height require aspect ratio, while PPI requires resolution and diagonal size.
Related measurement tools
Frequently asked questions
Is screen size width or diagonal?
Advertised screen size is normally the diagonal measurement.
What do I need for PPI?
You need pixel width, pixel height, and diagonal inches.