It is a well known phenomenon. Someone offers you information in other measures than you're used to, and you want to convert it quickly to common measures. But what is the conversion rate, or where is that handy table or calculator when you need it. This page is meant to be your quick and trustworthy assistant on conversion of temperatures, linear and cubic measures, power supply, currencies, and whatever else may come in handy.
A special addition is the calculator for horizontal tank volumes. It can determine the maximum capacity of a cylindrical or elliptical tank, as well as the the volume of a partially filled horizontal tank. Even dipstick charts can be generated.