Convert Inch to Centimetre
Turn inches into Centimetres in an instant. Type a value below to get an accurate in → cm result, with the formula and a quick-reference table.
1 in = 2.54 cm
Quick answer: 1 Inch = 2.54 Centimetre
Inch to Centimetre conversion table
| Inch (in) | Centimetre (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 |
How to convert Inch to Centimetre
To convert inches to Centimetres, multiply the value by 2.54.
- Take your measurement in inches.
- Multiply it by 2.54 — the number of Centimetres in one Inch.
- The result is the same amount, expressed in Centimetres.
To go the other way, multiply Centimetres by 0.39370079 — or simply divide by 2.54.
For example, a US quarter coin is about 1 in, which is 2.54 cm.
About Inch and Centimetre
An inch is an imperial unit of length defined as exactly 2.54 centimetres, or one-twelfth of a foot. It is standard in the United States for screen sizes, lumber, pipe diameters and everyday measurements.
A centimetre is one-hundredth of a metre, or 10 millimetres. It is the unit most people reach for to measure height, paper sizes and small objects in metric countries.
The Inch is a imperial / US customary unit while the Centimetre comes from the metric system — which is exactly why this conversion comes up so often. One Inch equals 2.54 Centimetres.
Other length conversions
Frequently asked questions
How many Centimetres are in a Inch?
1 Inch equals 2.54 Centimetre (in → cm). To convert any amount, multiply the number of inches by 2.54.
How do I convert Inch to Centimetre?
Enter the number of inches in the converter above and read the result in Centimetres. It applies the exact in → cm factor instantly, with full precision.
Is the Inch to Centimetre converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined length factors and full floating-point precision, then rounds the display to a clean, readable number.