As the title says, I'm looking for someone that can create a height converter / calculator which is very simple, non confusing, easy to use. It should consist of some type of form that the user can enter in a height in either feet+inches or centimeters and have the converted height shown somewhere. It would be preferable if this can be displayed in real time as the user is typing in a value without the need of any buttons to click if that's possible. It would be preferable if it was entirely self contained as in not depend on external resources or api's but I'm open to that if you have a good solution in mind that requires it.
If you know of Preev that's an example of the look and feel that I want, this is a currency converter, I basically want this but as a height converter/calculator. If you haven't heard of Preev then take a quick look at it on [url removed, login to view]
The finished product should be something that can be integrated into a website without any dependencies or requirements, by this I mean not a plugin for wordpress or some other cms, it should be standalone code that can be inserted into an html page or equivalent.