Converter
Centimetres to Inches
1 cm is 0.393701 in. Type any amount below and the answer follows as you type, on your device.
The answer follows what you type, rounded to six significant figures. Nothing is sent anywhere.
The formula
in = cm × 0.393701
Multiply the centimetre figure by 0.393701.
Worked example
How many inches are in 10 centimetres?
10 cm → 3.93701 in
Multiply 10 by 0.393701. The answer is 3.93701 in.
Quick reference
The common values, rounded to six significant figures.
| centimetres (cm) | inches (in) |
|---|---|
| 1 | 0.393701 |
| 5 | 1.9685 |
| 10 | 3.93701 |
| 15 | 5.90551 |
| 20 | 7.87402 |
| 30 | 11.811 |
| 50 | 19.685 |
When you need this
Shoe sizes, screen sizes and any specification sheet written for the American market are in inches, while almost everything measured in Australia is in centimetres.
The factor above is the exact legal definition of each unit, not a rounded one, so the answers stay right at any size. Nothing here is sent to a server: the conversion runs in the page.