Screen sizes

28 screen sizes with their real width and height. A diagonal on its own does not tell you how wide a screen is — the shape does the rest.

The one thing worth knowing

Screens are sold by diagonal, and area grows with the square of it. A 65-inch television is not 18% larger than a 55-inch one because 65 is 18% more than 55; it is 40% larger by picture area. That is why every step up feels bigger than the number suggests, and why measuring the width against the space is worth doing before ordering.

Laptop sizes

Monitor sizes

Television sizes

Working it out yourself

For a screen of diagonal d and aspect ratio r (16:9 is r = 1.778):

width  = d × r / √(r² + 1)
height = width / r

For 16:9 that simplifies to width ≈ 0.8716 × d and height ≈ 0.4903 × d, which is worth remembering: a 16:9 screen is about seven eighths of its diagonal wide and about half of it tall.

Screen resolutions — the pixel side of the same question. Paper sizes — the same reference for print.