645.96 centimeters is equal to 254.37 inches.
Some known objects of similar size are:
– The height of an average human adult male (approximately 5 feet 10 inches or 177.8 centimeters).
– The width of a standard door (usually around 2 feet 6 inches or 76.2 centimeters).
– The length of a typical school ruler (usually 30 centimeters or 11.8 inches).
– The diameter of a basketball (usually around 9.4 inches or 23.9 centimeters).
– The length of a standard computer keyboard (usually around 18 inches or 45.7 centimeters).