Using only html and JavaScript

Metric Conversion Program Web Application. (HTML and JavaScript)

Write a Java script that will assist the user with metric conversions. Your program should allow the user to specify the names of the units as strings (e.g., centimeters, liters, and grams, for the metric system and inches,pounds, for the English system) and should respond to simple questions such as "How many inches are in 2 meters?" "How many liters are in 10 quarts?"

Your program should recognize invalid conversions. For example, the question "How many feet in 5 kilograms?" is not a meaningful question because "feet" is a unit of length whereas "kilograms" is a unit of mass?