This free calculator is able to convert length from inch to centimeters and from centimeters to inch.The best app for school, college and work! If you are a student, it will helps you to learn measurement.Note: An inch is a unit of length in the imperial and United States customary systems of measurement. Inch is defined to be exactly 25.4 mm or 2.54 cm. There are 12 inches in a foot and therefore 36 inches in a yard.