Reel Line Capacity Calculator

Fits on spool: 0 m

% of spool filled: 0 %

Remaining after backing: 0 m

Calculation description:
The approximate calculation of line or braid capacity on a reel spool is based on:

• Diameter of the line or braid (mm)

• Reel length and manufacturer recommendations

• Optional backing line

Note: The result is only approximate and may vary depending on reel type, spool shape, and winding method.

Additional conditions for determining capacity:

• Braided lines wind less compactly than monofilament lines.

• Higher number of strands (8×, 12×) usually fit more than 4×.

• Do not fill the spool completely to avoid twisting or line breakage during casting.

• Backing line helps to wind thinner lines correctly and prevents slippage.

Calculator help:

• Enter the diameter and length recommended by the reel manufacturer.

• Enter your line/braid diameter and type (monofilament / 4×, 8×, 12× braided).

• If using backing line, enter its diameter and length.

• The calculator automatically calculates approximate meters, % of spool filled, and remaining line after backing.