Inches to centimetres
Enter a value in inches to convert it to centimetres. 1 in = 2.54 cm.
1 in = 2.54 cm
Formula
cm = in × 2.54
Worked example
12 in × 2.54 = 30.48 cm
Results on this page are rounded to 4 decimal places (4 significant figures below 1). Use the decimal places option above for a different rounding.
Inches to centimetres table
| Inches (in) | Centimetres (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 |
| 6 in | 15.24 cm |
| 8 in | 20.32 cm |
| 10 in | 25.4 cm |
| 12 in | 30.48 cm |
| 15 in | 38.1 cm |
| 18 in | 45.72 cm |
| 24 in | 60.96 cm |
| 30 in | 76.2 cm |
| 36 in | 91.44 cm |
| 48 in | 121.92 cm |
Good to know
The international inch has been defined as exactly 2.54 cm since 1959, and a foot is 12 inches (exactly 0.3048 m), so these conversions are exact. Only the rounding of the answer changes.