The formula for cm to inches
To convert from the metric system (centimeters) to the imperial system (inches), divide your measurement by the standard conversion factor of 2.54.
Formula
Inches = Centimeters ÷ 2.54
Example: 50 cm → 50 ÷ 2.54 = 19.685 inches
How to use this calculator
- Enter the length in centimeters (cm) in the input field above.
- The calculated measurement in inches (in) displays automatically.
Frequently asked questions
How many inches are in 1 centimeter?
There are approximately 0.3937 inches in 1 centimeter.
How do I convert cm to inches on a calculator?
Enter your centimeter value and divide it by 2.54. Alternatively, you can multiply the value by 0.3937.
Why is 2.54 used to convert cm to inches?
By international agreement, exactly 1 inch is defined as equal to 2.54 centimeters.