1 inches in other forms
| Decimal inches | 1 in |
|---|---|
| Nearest 1/16 inch | 1 in |
| Nearest 1/64 inch | 1 in |
| Feet and inches | 1 in (less than a foot) |
| Centimeters | 2.54 cm |
| Millimeters and meters | 25.4 mm · 0.0254 m |
In words: 1 inch is 2.54 centimeters.
Reading 1 inches on a tape measure
| Tape marked in | Nearest mark | Off by |
|---|---|---|
| 1/8 in | 1 in | 0 mm |
| 1/16 in | 1 in | 0 mm |
| 1/32 in | 1 in | 0 mm |
Nearby values
| Inches | Centimeters | Feet and inches |
|---|---|---|
| 1 in | 2.54 cm | 1 in |
| 2 in | 5.08 cm | 2 in |
| 3 in | 7.62 cm | 3 in |
| 4 in | 10.16 cm | 4 in |
| 5 in | 12.7 cm | 5 in |
| 6 in | 15.24 cm | 6 in |
How it's calculated
Since 1959 the inch has been defined as exactly 2.54 centimeters, so the conversion itself is exact: 1 in × 2.54 = 2.54 cm. The fractions above are rounded to the nearest mark, and feet and inches split the total at 12 inches per foot.
For any other value, use the inches to cm converter.