20.92 centimeters is equal to 8.23 inches.
This is slightly longer than a standard 8 inch ruler and slightly shorter than a 9 inch ballpoint pen. It is also slightly longer than a dollar bill (6 inches) and slightly shorter than a dollar bill folded in half (4.5 inches). Additionally, it is slightly longer than a candy bar (6.25 inches) and slightly shorter than a credit card (3.37 inches).