cm to inches | centimeters to inches

How to Use the Calculator

1. Input the Length in Centimeters:

   • Enter the length in centimeters (cm) in the input field.
   • To enter a negative length, use the +/- button to toggle the sign.

2. Optional: Set Fraction Precision:

   • Enter the denominator for the fractional inch you want the decimal part of the inch measurement rounded to (e.g., 8 for rounding to the nearest 1/8 of an inch).

3. Calculate:

   • Press the “Calculate” button to perform the conversion.
   • The converted length in inches, along with the fractional approximation, will be displayed below.

4. Clear:

   • Press the “Clear” button to reset the input and the result.

Formula

The conversion from centimeters to inches is done using the following formula:

$$\text{inches}=\frac{\text{cm}}{2.54}$$

• inches is the length in inches.
• cm is the length in centimeters.

Examples

1. Example 1: Converting 1 cm to inches

   • Input: 1 cm
   • Calculation: $\frac{1}{2.54} = 0.393701$
     
   • Result: 1 cm is approximately 0.3937 inches or 3/8 inches.

2. Example 2: Converting 10 cm to inches

   • Input: 10 cm
   • Calculation: $\frac{10}{2.54} = 3.93701$
     
   • Result: 10 cm is approximately 3.937 inches or 4 inches.