What is 21 inches to centimeters? The answer is that 21 inches equals 53.34 centimeters.
How to convert 21 inches to cm? We know that one inch is equal to 2.54 centimeters. Therefore, to convert 21 inches to centimeters, we multiply the inch value by 2.54. This gives us 21 inches × 2.54 = 53.34 cm. So, 21 inches is equal to 53.34 centimeters.
See also: How to convert 21 cm to inches.