I've been looking for a library that can take different names of the same measurement unit and return a standard result that can use used for further processing.

For example: kilogram can be found written as KG, kg, kilo, kilogram, kilo gram, or something similar in many places in the real world. I would want to enter one of these and return something that is going to the same every time.

Does a library like that exist or would I have to write one myself?