A fishing line spooler is an apparatus that both spools and strips a fishing line. The apparatus is portable and mountable. The apparatus accommodates a variety of spinning reels and fishing line spools. The apparatus includes a base plate, a stand, a line-guiding plate, a motor, a main shaft, and a spool retainer. The base plate positions and upholds the stand. The stand offsets the motor and the main shaft from the base plate. The line-guiding plate directs the fishing line from a spool and prevents the fishing line from twisting. The motor rotates a spinning reel mount and a line stripper spool, individually, in order to spool and strip a fishing line, respectively. The main shaft mounts a fishing line spool. The spool retainer secures the position of the fishing line spool along the main shaft while allowing the fishing line spool to rotate about the main shaft.
