Green Log Weight & Rigging Calculator

Flagship

Species, diameter and length → green log weight and the minimum rigging line you need. Built for the jobsite.

Inputs

Species · green weight 63 lb/ft³

Diameter · avg

Length

Rigging scenario

Design factor · line MBS ÷ load

24"

4 ft

Estimated green log weight

790lb

≈ 359 kg · 12.6 ft³

Peak rigging load · ×2

1,585lbf

Min line MBS · 5:1

7,917lbf

Peak ≈ 7.0 kN · scenario: controlled lower

Minimum rigging line

1/2"12-strand

Need 7,915 lbf @ 5:11/2" rated 8,400

1/2"12-strand8,400 lbfUSE

9/16"double braid13,800 lbf

5/8"double braid19,600 lbf

3/4"double braid28,300 lbf

7/8"double braid41,000 lbf

1"double braid52,000 lbf

Field estimate only, per ANSI Z133. Green densities are representative (USDA FPL / NPS arborist log-weight chart); verify the actual pick, hardware ratings and rigging angles on site. Shock loads from dynamic rigging multiply static weight several-fold. Not a substitute for a qualified rigger's judgment.

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