Fast answers, clean math
Inches to cm converter
Enter inches and get centimeters instantly. This page also shows the formula so you can sanity-check the result.
Unit converter
Convert inches to centimeters
Formula
Inches to centimeters (in → cm)
The conversion is based on an exact definition: 1 inch equals exactly 2.54 centimeters.
Formula: centimeters = inches × 2.54
If you need the reverse, divide by 2.54: inches = centimeters ÷ 2.54.
| Inches (in) | Centimeters (cm) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 5 | 12.7 |
| 10 | 25.4 |
| 20 | 50.8 |
| 40 | 101.6 |