Convert Centimeters to Inches
cm to in · length conversion
What are centimeters and inches?
A centimeter is one-hundredth of a meter, roughly the width of an adult fingernail. An inch is an imperial unit equal to exactly 2.54 cm, widely used in the US and UK. For scale: a doorway is about 2 m (6.6 ft) tall, and a marathon is 42.2 km (26.2 mi).
How to convert centimeters to inches
1 cm = 0.393701 in. To convert, multiply the number of centimeters by 0.393701. For example, 5 cm = 1.9685 in, and 20 cm = 7.87402 in. To go the other way, multiply inches by 2.54 (since 1 in = 2.54 cm).
Centimeters to Inches conversion table
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 | 0.393701 |
| 2 | 0.787402 |
| 5 | 1.9685 |
| 10 | 3.93701 |
| 20 | 7.87402 |
| 50 | 19.685 |
| 100 | 39.3701 |
FAQ
What is 1 cm in in?
1 cm = 0.393701 in. To convert any amount, multiply the number of centimeters by 0.393701.
How do I convert inches back to centimeters?
Go the other way: 1 in = 2.54 cm, so multiply inches by 2.54 to get centimeters.
Is a centimeter bigger than a inche?
No — 1 cm is the smaller unit, equal to 0.393701 in (it takes 2.54 cm to make one in).
Are these length conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.