Amount of torque per setting in dewalt dc925 xrp

The torque settings are not tightly controlled so they are not all that repeatable from drill to drill. They also vary somewhat with the speed of the drill and the condition of the battery. And they aren't linear (a setting of 10 is not twice the 5 setting) Simplest thing to do for a rough idea is to use your hand to hold the chuck still to feel how much torque you have at each setting. (start low and grip it tight!) If you want a specific torque setting, say 10 ft-lbs, then put a stout screw in a scrap of wood, hang a 10 lb weight on it 12 inches from the screw and adjust until it just starts to slip.