Feet,Inches and Centimeters

What are feet and inches? And it's even more so if it's a unit that you don't usually use. We've created an app that makes it easy to convert feet, inches to centimeters, centimeters to feet, and inches. It's very difficult to convey height in feet and inches for people who use centimeters. 1 foot = 30.48 centimeters 1 inch = 2.54 centimeters How tall am I in feet?