Gear Ratio
From The Angler's Dictionary — your encyclopedia of fishing rods, reels, and tackle
Gear ratio describes how many times a fishing reel's spool rotates for every single turn of the handle. It is expressed as a number like 6.4:1, which means the spool completes 6.4 full rotations per handle turn. The number on the right is always 1 — representing one complete crank. The higher the number on the left, the faster the reel retrieves line.
Gear ratios fall into three general categories. Low-speed reels (4.0:1 to 5.4:1) retrieve line slowly but with substantial torque, making them ideal for deep-diving crankbaits, heavy swimbaits, and any technique where you need pulling power rather than speed. Medium-speed reels (5.5:1 to 6.6:1) are the most versatile, handling spinnerbaits, jigs, medium-diving crankbaits, and a wide range of general fishing. High-speed reels (7.0:1 to 10.1:1) pick up line quickly and are best for techniques where the rod does the work — flipping, pitching, topwater, and jerkbaits — because you need to rapidly recover slack line.
It is important to consider gear ratio alongside IPT (inches per turn), which measures how much line the reel actually retrieves per crank. Two reels with the same gear ratio can have different IPT values if their spool sizes differ. A larger spool at the same gear ratio picks up more line per turn. For most beginners, a medium gear ratio around 6.2:1 to 6.4:1 covers the widest range of fishing situations without forcing you to specialize.