What is 20 inches to centimeters? The answer is that 20 inches equals 50.8 centimeters.
How to convert 20 inches to cm? We know that one inch is equal to 2.54 centimeters, so to convert 20 inches to centimeters, we must multiply the amount of centimeters by 2.54, which means that 20 inches is equal to 20 inches × 2.54 = 50.8 cm.
See also: How to convert 20 cm to inches.