To convert 1.64 centimeter to inch, multiply by the conversion factor 0.393701. The calculation is 1.64 x 0.393701 = 0.64566964. This rounds to 0.6457 inch.

1.64 centimeter equals exactly 0.64566964 inch. For practical purposes, this is often rounded to 0.6457 inch.

Objects measuring approximately 1.64 centimeter include a Euro 1 cent coin diameter (1.625 cm), a standard shirt button diameter (1.5 cm), and the length of an M2x16mm machine screw (1.6 cm).

Converting centimeter to inch is useful for international trade, engineering specifications, and when working with products or designs originating from countries that primarily use the imperial system, such as the United States. It ensures compatibility and clear communication across different measurement standards.

A simple memory aid is to remember that 1 centimeter is approximately 0.4 inches. For 1.64 cm, you can quickly estimate by multiplying 1.64 by 0.4. Visualizing a Euro 1 cent coin (1.625 cm) can also help anchor the size in your mind before converting to its inch equivalent.