Every calculator in the toolkit, grouped by what it's actually used for — pick one below to jump straight in. Each is a quick working check, not a substitute for a certified lifting plan or engineering sign-off.
Work out Safe Working Load from MBL, de-rate for sling angle, and check tension per leg on a multi-leg sling.
Calculator 01Basic pass/fail checks for padeyes and hooks/shackles — rated capacity against applied load, with side-load warnings.
Calculator 02Diametric reduction, broken-wire counts (6d and single-strand rules), and a physical damage checklist per ISO 4309.
Calculator 03Torque from target preload using K × D × F, plus a star-pattern bolt-up sequence and multi-pass tightening reference.
Calculator 09Estimate capacity at a radius between two published load chart points, with a hard block on extrapolation.
Calculator 14DROPS Calculator methodology — classifies likely outcome (Slight/Minor/Major/Fatality) from mass and fall height, with a banded chart.
Calculator 05Free fall, deceleration distance, harness stretch, and worker height vs. actual clearance available below the work point.
Calculator 10Safe working load per bay against imposed load — people, materials, and equipment — using BS EN 12811-1 load classes.
Calculator 11Daily noise exposure across multiple periods, checked against EU/UK LEP,d and US OSHA dose action/limit values.
Calculator 12Trigger time vs. exposure action/limit values, with the A(8) formula and the HSE points system.
Calculator 13Weight loss (ASTM G1), penetration rate, and electrochemical (ASTM G102) methods, with MPY/MM-Y/MDD results.
Calculator 07Estimate years to retirement thickness from a corrosion rate, plus a suggested next inspection date using the half-life rule.
Calculator 08Estimate anode life from mass and current demand, or the number of anodes needed for a target design life.
Calculator 15Check equipment category, gas/dust group, and temperature class against a hazardous zone, or look up what a zone requires.
Calculator 04Build a year-view wall chart of inspection due dates from your equipment list and print it, or save it as a PDF.
Calculator 06Additional offshore and rigging calculators will appear here as they're added to the toolkit.