ConvertPlus extends the built in Google Sheets function "CONVERT" which allows conversion of one quantity (number with a unit of measure) to another unit of measure. ConvertPlus extends this functionality by adding:
  
  * More units
  * Explicit pre-fixes that can be added to any unit (e.g. [m]m, [c]m, [k]m)
  * Ability to use compond units (e.g. "mi/hr" "k[g] m / s^2")
  * Functions for adding, subtracting, multiplying, dividing, raising power of and comparing equality of quantities
  * Ability to chain together all functions to avoid multiple cell calculations