Inches to Centimeters (in to cm)
A fast inches-to-centimeters calculator – the result updates as you type.
1 in = 2.54 cm
1 in = 2.54 cm. Enter a value and get the result instantly. Below you will find the formula and a table of commonly used values.
Formula
cm = in × 2.54
in to cm table
| in | cm |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 20 in | 50.8 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 500 in | 1,270 cm |
| 1,000 in | 2,540 cm |
Where it is used
Inches are most often met in screen diagonals (TVs, monitors, phones), in tyre and bicycle wheel sizes and in pipe fittings. To know whether a device will fit a space, inches are converted to centimetres.
A quick mental shortcut
1 inch = 2.54 cm. Roughly, multiply by 2.5: 32 x 2.5 = 80 cm (the exact result is 81.28 cm).
Exact examples: a 27-inch monitor = 27 x 2.54 = 68.58 cm diagonal; a 6.1-inch phone screen = 15.49 cm.
Good to know
Screen size is given as the diagonal, not the width or height, so the width of a 27-inch monitor is well below 68.58 cm.