Daze101:
Can some one kindly help me understand how strain gauge readings are converted into torque or force readings in general?
Very first thing is to calibrate your strain gauge for various weights within it's range.
Second measure the exact length, center to center, of the arm connecting the strain gauge to the source of your torque.
Third, put your system all together and measure the"'weight" the arm puts on the strain gauge.
Fourth, divide the "weight" by the length of the "arm" and you will have torque. Units you choose are up to you.
Paul