Free lifting, rigging, and inspection calculators — pick one to open it in a new tab.
Safe Working Load from MBL, sling angle de-rating, and multi-leg tension.
Calculator 01Pass/fail checks for padeyes and hooks/shackles against applied load.
Calculator 02Diametric reduction, broken-wire rules, and a physical damage checklist.
Calculator 03Torque from target preload, plus a star-pattern bolt-up sequence diagram.
Calculator 09Estimate capacity at a radius between two chart points, with extrapolation blocked.
Calculator 14DROPS Calculator methodology, with a banded mass-vs-height chart.
Calculator 05Free fall, deceleration, harness stretch, and worker height vs. available clearance.
Calculator 10Safe working load per bay against imposed load from people, materials, and equipment.
Calculator 11Weight loss, penetration rate, and electrochemical methods, with MPY/MM-Y/MDD results.
Calculator 07Estimate years to retirement thickness from a corrosion rate, plus next inspection date.
Calculator 08Estimate anode life or anodes needed for a target design life.
Calculator 15