arduinoadrian:
When I saw the complex math on this formula, I didn't even try; but I want to know as it maybe useful in the future.
I think the best answer is "why would you bother anyway?". Your planning for things useful in the future might be better devoted to research for simpler alternatives - like using DS18B20s, which don't need any of that stuff, and bring other benefits to the table as well. All for $5.