Conversion Using SI Units

The scientific standard for units is the Systeme Internationale

en.wikipedia.org/wiki/International_System_of_Units

previously known as the meter-kilogram-second (MKS) system.

Conversion of units is simple: Each unit is assigned a number that converts it to the corresponding SI unit. Given two units, source and goal,

source * f_source = SI = goal * f_goal

goal = source * ( f_source / f_goal )

When there are multiple units, their factors are multiplied or divided as above. This process is O(n) for a quotient involving n units.