Length conversion
1 in to cm
2.54 cm
1 inches = 2.54 centimetres. Exact factor: cm = in × 2.54.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
cm = in × 2.54
Worked example: 1 × 2.54 = 2.54 cm.
Values near 1 in
| in | cm |
|---|---|
| 0.25 | 0.64 |
| 0.5 | 1.27 |
| 0.75 | 1.91 |
| 1this page | 2.54 |
| 1.25 | 3.18 |
| 1.5 | 3.81 |
| 1.75 | 4.45 |
Frequently asked
How do you convert inches to centimetres?
Apply the formula cm = in × 2.54. Enter any value in the live converter above and the result updates as you type.
What is 1 in in cm?
1 in equals 2.54 cm. The reference table below shows the values immediately around 1 in.
Is this conversion exact?
Yes. The inch has been exactly 2.54 cm since the 1959 international yard and pound agreement.