inch to centimetre — free converter
Formula
centimetre = inch × 2.54
Worked example
15 inches = 38.1 centimetres.
Conversion table
| Inch | Centimetre |
|---|---|
| 1 inches | 2.54 centimetres |
| 2 inches | 5.08 centimetres |
| 5 inches | 12.7 centimetres |
| 10 inches | 25.4 centimetres |
| 25 inches | 63.5 centimetres |
| 50 inches | 127 centimetres |
| 100 inches | 254 centimetres |
What these units mean
An inch is the imperial step used on rulers in the United States and for screen sizes. A centimetre is the small metric step you see on a school ruler and on a sewing tape. When you change from inches to centimetres, you are simply expressing the same amount on a different scale, so the quantity itself does not change — only the number and the unit label do. A quick everyday check helps: picture the amount in your own life first, then let the converter do the arithmetic, and the result should feel roughly right before you use it for a purchase, a recipe or a journey.
FAQs about inch to centimetre
How many centimetres are in 1 inch?
1 inch = 2.54 centimetre.
What is the formula for inch to centimetre?
centimetre = inch × 2.54. This conversion is a multiplication by a fixed standard factor.
What is 15 inches in centimetres?
15 inches = 38.1 centimetres.
How do I convert centimetres back to inches?
Use the reverse page: centimetre to inch. The converter on that page swaps the direction for you.
Is the inch to centimetre result exact?
The factor is the standard published factor, and the converter shows the result rounded for reading. For everyday use this is exact enough; for engineering or laboratory work, check the rounding your task requires.