Then, by multiplying the given number of feet (5.5) by this conversion factor, we effectively convert the feet measurement into centimeters, yielding a result of 167.64 cm. This straightforward multiplication provides us with an accurate conversion and is universally applicable for converting any foot measurement into centimeters. Convert 5 ft 5 in to centimeters, plus learn the feet to cm height conversion formula. This simple calculator will allow you to easily convert 5.5 ft to cm. Convert 5.5 Feet to Centimeters. What is 5.5ft in cm? How tall is 5.5'? How many centimeters in 5.5 Feet? The answer is: 167.64. Convert Feet to Centimeters