How to convert Inches to centimeters
centimeters = inches × 2.54
Multiply the number of inches by 2.54. For a mixed inch fraction, add the whole inches to the fraction before entering the value: 8½ inches becomes 8.5.
Worked examples
8.5 in ≈ 21.59 cm
8.5 × 2.54 ≈ 21.59
An 8½-inch paper width converts to 21.59 centimeters.
27 in ≈ 68.58 cm
27 × 2.54 ≈ 68.58
A screen advertised as 27 inches has a nominal diagonal of 68.58 centimeters. This conversion does not determine its width or height.
Frequently asked questions
How many centimeters are in 12 inches?
Twelve inches is exactly 30.48 centimeters. It is also one international foot.
Will converting a screen diagonal give its width?
No. A diagonal is a different measurement from width and height. To calculate those dimensions, you also need the screen’s aspect ratio.