If one centimeter is equal to how many inches?

One centimeter is equal to approximately 0.3937 inches. This value is derived from the conversion factor between the metric system and the imperial system, where 1 inch is defined as exactly 2.54 centimeters. Therefore, to find the number of inches in a centimeter, you can use the relationship:

1 cm = 1 inch / 2.54 inches/cm.

By calculating this, we get:

1 cm = 1/2.54 inches ≈ 0.3937 inches.

This conversion is fundamental in various applications, including engineering, construction, and international trade, where measurements from different systems need to be accurately converted. The precise relationship helps ensure consistency and accuracy in measurements used across different regions and industries.