Convert inches to centimetres
Enter a value in inches (in) to get centimetres (cm). One inch is 2.54 centimetres; one centimetre is 0.393701 inches.
How to use the Inch to centimetre
- Type the number of inches.
- Click Convert.
- Read the result in centimetres, plus the same value in every other length unit.
in to cm formula
centimetres = inches × 2.54. To go the other way, inches = centimetres × 0.393701 (see centimetres to inches).
Worked example
12 in × 2.54 = 30.48 cm.
Inches to centimetres conversion table
| Inches | Centimetres |
|---|---|
| 0.1 in | 0.254 cm |
| 0.5 in | 1.27 cm |
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 250 in | 635 cm |
| 500 in | 1,270 cm |
| 1,000 in | 2,540 cm |
About the inch
Exactly 25.4 mm since the 1959 international yard and pound agreement. Screens, tyres and paper in the USA and UK are still sized in inches.
About the centimetre
One hundredth of a metre, the everyday metric unit for body height, clothing and furniture outside the USA.
Related conversions
centimetres to inches · inches to millimetres · inches to feet · any unit.
Frequently asked questions
How many centimetres in a inch?
2.54 centimetres.
How many inches in a centimetre?
0.393701 inches.
Is the factor exact?
The factor 2.54 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.