What is 18 inches to centimeters? The answer is that 18 inches equals 45.72 centimeters.
How to convert 18 inches to cm? We know that one inch is equal to 2.54 centimeters, so to convert 18 inches to centimeters, we must multiply the amount of centimeters by 2.54, which means that 18 inches is equal to 18 inches × 2.54 = 45.72 cm.
See also: How to convert 18 cm to inches.