The charted multiplier & shrink/in are the same for every conduit size. Multipliers shown are the bender-manufacturer chart values (6.0 at 10°, 2.6 at 22.5°, 2.0 at 30°, 1.4 at 45°, and 1.2 at 60°), the rounded 1/sin, and they are what the calculator applies; 15° has no chart row, so it shows the exact 1/sin. Shrink shown is the bender-manufacturer chart value, which is what the calculator applies. Working it from the angle alone (height × tan(½ angle)) gives a higher number, because that treats the bend as a square corner with no radius; at 60° it runs about a third high against a real bend. Use the chart.

Mark = stub − take-up, measured to the back of the bend (not the floor). Deduct = take-up. Gain (outside corner, for developed length & back-to-back 90s): 1/2"=2.42" · 3/4"=2.85" · 1"=3.63" · 1¼"=4.62".

Center-to-outer = depth × mult (the bender saddle table at 45° and 60°; exact 1/sin elsewhere). Bend center first, then outers each way. A 45° saddle shrinks the center ~3/16"/in of depth, so recenter after.