How Long Is 1 Inch? 12 Common Things That Are Exactly 1 Inch Long
1 inch is exactly 2.54 centimeters or 25.4 millimeters. It is also 0.0254 meters and 1/12 of a foot. NIST lists the inch-to-centimeter conversion as 2.54 cm per inch. A useful way to picture 1 inch is to compare it with a physical object that has a documented 1-inch dimension. For example, a regulation hockey…