Practical measurement guide
Screen Dimensions Calculator
Estimate screen width and height from diagonal size and aspect ratio for laptops, monitors, tablets, and TVs.
Screen width and height can be estimated from diagonal size and aspect ratio.
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 dimensions formula
Use the diagonal and aspect ratio to estimate the visible display rectangle. Bezels, stands, and casing are not included.
Fit-check guidance
Use calculated width and height for quick comparison, then check manufacturer dimensions before buying a sleeve, monitor arm, cabinet, or wall mount.
Related measurement tools
Frequently asked questions
Does this include the bezel?
No. The calculation estimates visible display dimensions, not the frame or casing.
What values are required?
Enter diagonal inches and choose an aspect ratio.