How the conversion works
To convert 166 cm to inches, divide by 2.54: 166 ÷ 2.54 = 65.4 in, to one decimal. Twelve inches make a foot, so that is 5 ft 5.4 in, or 5 ft 5 in to the nearest inch.
The nearest whole inch, asked the other way round: What is 5'5" in cm and inches?