Convert centimeters to inches in one step. Type a value, see the answer and a few related units, and use the chart below for common values. Free, private, and runs entirely in your browser.
Divide the number of centimeters by 2.54 to get inches. The units are defined in terms of each other, so the conversion is exact. The calculator uses the full-precision factor, while the factor printed here is rounded.
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 | 0.3937 |
| 2 | 0.7874 |
| 5 | 1.9685 |
| 10 | 3.937 |
| 15 | 5.9055 |
| 20 | 7.874 |
| 25 | 9.8425 |
| 30 | 11.811 |
| 50 | 19.685 |
| 75 | 29.5276 |
| 100 | 39.3701 |
| 150 | 59.0551 |
How many inches is 1 cm? About 0.3937 inches, since 1 ÷ 2.54 = 0.393701.
Why show a fraction? Tape measures and plans use fractions of an inch, so the nearest 1/16 is easier to read than a long decimal.
Convert 30 centimeters to inches: 30 ÷ 2.54 = 11.811 in.
Is the centimeters to inches factor exact? Yes. The units are defined in terms of each other, so the factor has no uncertainty.
Can I convert inches back to centimeters? Yes. Use the converter in the opposite direction, which is linked below.
Centimeters come from the metric system created in France in the 1790s, where the centimeter is one hundredth of a meter. The inch was tied to the metric system by the 1959 international agreement that set it at exactly 2.54 centimeters, so every conversion between the two is exact.
Use this converter for height, body measurements, clothing sizes, phone and tablet screens and shelf or furniture dimensions. A height of 175 cm is 68.9 inches, or 5 ft 8.9 in, and the nearest 1/16 inch value helps with woodworking and sewing.
What is a quick estimate for centimeters to inches? Multiply or divide by the rounded factor, 1 ÷ 2.54, then use the calculator for the exact value.
Does the converter work on a phone? Yes. It runs in your browser and updates when you press Calculate.