648.49 centimeters is equal to 255.4728 inches.
To provide comparisons to known objects of similar size, 648.49 centimeters is slightly longer than 8 and a half standard pieces of printer paper stacked on top of each other (each piece of printer paper is 8.5 inches long). It is also about the same length as a standard adult skateboard (depending on the brand, skateboards can range from 7.5 to 8.5 inches wide and 31 to 32 inches long).
In terms of height, 648.49 centimeters is slightly taller than the average adult male (approximately 5’7″ or 67 inches) and slightly shorter than the average adult female (approximately 5’3″ or 63 inches). It is also about the same length as a standard grand piano (which can range from 5 to 6 feet long).