Inches to Centimeters
An inch is exactly 2.54 centimeters, used for screen sizes, paper formats, and everyday measurements in the US. A centimeter is one hundredth of a meter, commonly used for paper sizes and human height in metric countries. 1 in equals 2.54 cm, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to length, measured here against length's base unit (m) — every other length unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
cm = in × 2.54
in = cm × ≈0.393701
Worked example: 5 in × 2.54 = 12.7 cm.
Conversion table
| Inch (in) | Centimeter (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 |
Frequently asked
- How many Centimeters in a inch?
- 1 in equals 2.54 cm.
- How do I convert Inches to Centimeters?
- Multiply the value in in by 2.54 to get cm. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Inch and Centimeter are both defined by a fixed conversion factor to length's base unit (m), so the result shown is exact to the precision displayed, not an approximation.