Enter your body weight (default 142)(or desired body weight) as the boiling point of water on your temperature scale. Then add you age (or desired age)(default 22) as the freezing point of water. (Body weight must be greater than age). Enter any temperature in any of the above text fields, which may include whole or rational numbers, positive or negative numbers, then click outside the textbox or click in one of the other text boxes for the function [calculate()] to be triggered: (Please note that entry of any other characters from the keyboard will not be accepted)