Not sure about converting steps but for activity points
If you don't have the actual WW calculator this may help:
Thanks to Kelly_S who had originally posted this info on another thread
Activity points are based on time done*current weight*intensity. Sweat is not a valid indicator of intensity. Heart rate is the best indicator but breathing is a good indicator.
Light Activity (you can talk and sing):
Weight X Minutes X .000232 = Activity Points
Moderate Activity (you can talk but not sing):
Weight X Minutes X .000327 = Activity Points
High Activity (you need deep breaths to talk):
Weight X Minutes X .0008077 = Activity Points
Weight training is a low intensity work out unless you do it on a circuit trainer where you are running from station to station.