3 centimeters (cm) is equal to approximately 1.1811 inches. To convert centimeters to inches, you can use the conversion factor where 1 centimeter is equal to 0.393701 inches. Therefore, to find out how many inches are in 3 centimeters, you multiply 3 by 0.393701. This calculation gives you the result of 1.1811 inches. This conversion is useful in various fields such as engineering, construction, and everyday measurements where different units are used.