Cable Reel Capacity Calculator
Estimate cable length from reel flange and barrel diameters, usable width, cable outside diameter, and a packing factor.
Enter cable and drum dimensions
Adjust for layering, spacing, and winding irregularity; 1.0 is the ideal geometric limit.
Estimated reel capacity
About this calculator
Estimate cable length from reel flange and barrel diameters, usable width, cable outside diameter, and a packing factor.
The uniform packing model does not simulate individual winding layers, cable springback, flange clearance, allowable reel weight, or handling requirements.
Method and assumptions
Ideal geometric length = annular drum volume ÷ cable cross-sectional area, converted from inches to feet. The displayed estimate multiplies this ideal length by the entered packing factor.
Use manufacturer dimensions and limits for the actual cable and reel. Defaults are illustrative only.
FAQs
Can the calculator choose a bend-radius multiplier?
No. The correct multiplier depends on the cable construction and installation condition. Enter the value specified by the cable manufacturer.
Does the reel estimate guarantee the cable will fit?
No. It estimates volume-based capacity using a packing factor. Actual capacity depends on winding pattern, reel geometry, flange clearance, cable deformation, and handling limits.
Sources
Use the cable manufacturer’s specifications for outside diameter and bend limits, and the reel manufacturer’s dimensional and weight ratings.