Wire Length Calculator

Enter your bare drum diameter, wire diameter, drum width, and total wire length. The calculator works out how many layers fit on the drum, footage per layer center-to-center, tow stop references, and a printable wire length plaque.

Drum
O.D. of the bare barrel — no wire on it
Usable width between flanges
Wire
Nominal catalog size (e.g. 0.5 for ½″)
Total wire on the drum — from cert or spool tag
Options
Dead / Anchor Wraps
Layer 1 = outermost (first wire off the drum).
Tow stop = wire remaining when half the drum width is empty at that layer.
Wire fills from the innermost layer outward based on total length.
Enter your drum and wire values, then press Calculate
Need a Tow Wire Length Plaque for your vessel?

We produce custom PETG-CF wire length table plaques — professional raised-text plaques built to last in the marine environment. Use the calculator above to generate your data, then order your plaque.

Order a Plaque