Fishing Reel Backing + Line Capacity Calculator Fishing Reel Backing + Line Capacity Calculator Standard Metric Backing + Working Line Capacity Only ⓘ BACKING MODE Backing mode is selected: calculate backing + your chosen working line length. Reel Specs Reel rated mono lb test ⓘ Reel rated mono diameter (mm) ⓘ Reel capacity (yards) ⓘ Premium Line Braid/Fluoro line (yards) ⓘ Braid/Fluoro line diameter (in) ⓘ Backing Backing diameter (in) ⓘ Calculate Reel inches per turn (optional) ⓘ Close
