Abstract: A convertible, compactible, transportable golf training device whereby a golfer may practice properly addressing and striking a golf ball to increase the accuracy of the golfer's putting. The device may be attached to a chair for indoor practice or easily converted for outdoor practice by insertion of spikes. For indoors, a pair of parallel spaced apart bars having screwably mounted perpendicular thereto a pair of spaced apart rods is secured to the legs of a chair. The rods projecting outward from the bars have holes in their forward ends that when aligned receive a trainer. The trainer, when inserted in the rods, is parallel to the bars and perpendicular to the rods. A golfer addresses a golf ball placed on the surface below the trainer and maintaining his putter in a squared position relative to the golf ball swings and strikes the golf ball.