Length conversion
4 in to cm
10.16 cm
4 inches = 10.16 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: 4 × 2.54 = 10.16 cm.
Values near 4 in
| in | cm |
|---|---|
| 3.25 | 8.26 |
| 3.5 | 8.89 |
| 3.75 | 9.53 |
| 4this page | 10.16 |
| 4.25 | 10.8 |
| 4.5 | 11.43 |
| 4.75 | 12.07 |
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 4 in in cm?
4 in equals 10.16 cm. The reference table below shows the values immediately around 4 in.
Is this conversion exact?
Yes. The inch has been exactly 2.54 cm since the 1959 international yard and pound agreement.