Convert inches to centimeters instantly. Enter a value below, or use the formula and reference table further down the page.
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How to convert inches to centimeters
Multiply the value by 2.54.
cm = in × 2.54Example: 10 in = 25.4 cm.
Inches to Centimeters conversion table
| Inches (in) | Centimeters (cm) |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 15 in | 38.1 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
Frequently asked questions
How many centimeters is 1 inch?
1 inch equals 2.54 centimeters.
What is the formula to convert in to cm?
To convert in to cm, multiply the value by 2.54. The full formula is: cm = in × 2.54.
How do I convert centimeters back to inches?
Use the same calculator above and type your value into the centimeters field instead — it converts in both directions. Or use the reverse formula: in = cm ÷ 2.54.
Is the in to cm conversion exact?
The conversion factor used here (2.54) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.