Screen Size

Converts a screen diagonal between inches and centimeters and finds the width and height from the aspect ratio.

Screen diagonals are usually given in inches: 1″ = 2.54 cm.

The screen size converter converts inches to centimeters and finds the screen width and height from the aspect ratio.

1″ = 2.54 cm; width = d · a : √(a² + b²); height = d · b : √(a² + b²)

Here d is the diagonal and a : b is the aspect ratio. The formulas follow from the Pythagorean theorem.

Example. 27″ = 68.58 cm. With 16:9 the width is ≈ 59.77 cm and the height is ≈ 33.62 cm.

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