I think the easiest thing to do is start by converting your height to be entirely in inches. So, if you're 5 feet 6 inches: 5 feet x 12 inches = 60 inches 60 inches + 6 = 66 inches Since by definition 1 inch = 2.54 centimeters: 66 inches x 2.54 centimeters = 167.64 cm Hope that helps!