I just finished spending about 2 hours getting all the calculators functioning again. All of them are good to go except the fuel/oil one, which does still sorta work but because the code is written in a language 99% of browsers do not support anymore, it'll have to be viewed in Internet Explorer only.
In order to find them, Navigate to the front page or any article (If you aren't here already)
Click the link that says "Calculators & Tools
" in the navbar (Under Classifieds,