How to convert inches to centimeters
- Type the value you want to convert.
- The result appears instantly. Use Swap units to reverse the direction.
- Choose other units from the lists if you need a different conversion.
Formula
cm = in × 2.54 and in = cm × 0.3937.
Examples
5 in = 12.7 cm. 8 in = 20.32 cm. 12 in = 30.48 cm.
Quick reference table
| in | cm |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 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 |
| 24 in | 60.96 cm |
| 36 in | 91.44 cm |
And the other way: cm to in
| cm | in |
|---|---|
| 1 cm | 0.3937 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.937 in |
| 25 cm | 9.8425 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
When you need this conversion
Monitor and TV sizes, tyre and pipe sizes and clothing measurements are given in inches. Converting to centimeters helps you check whether something will fit a space measured with a metric tape.
Frequently asked questions
How many cm is 1 in?
1 in equals 2.54 cm. In the other direction, 1 cm equals 0.3937 in.
How many cm is 6 inches?
6 in is 15.24 cm.
What is the formula to convert inches to centimeters?
Multiply the number of in by 2.54 to get cm. To go back, multiply cm by 0.3937.
Is this converter free and private?
Yes. It is free, needs no sign-up and runs in your browser, so the numbers you enter are not sent anywhere.
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Last updated: November 6, 2026