If you are looking for the official IEC Risk Assessment Calculator, it is traditionally provided free of charge to individuals who purchase the IEC 62305-2 standard. This software simplifies the complex mathematical requirements of the standard, allowing users to input structure dimensions and local lightning density to calculate risk levels for human life, public services, and economic loss. Software & Manual Resources
Because the official software is often tied to the purchased standard, many engineers use manufacturer-provided tools that comply with the same regulations.
Official IEC Tool: Included with the purchase of the IEC 62305-2 standard.
DEHNrisk Software: A comprehensive tool that corresponds with the latest edition of IEC 62305-2. It calculates failure rates for electronic systems and evaluates protection measures for open areas. Visit the DEHNrisk portal for access. If you are looking for the official IEC
ABB/Furse Guide: A technical manual and guide to the BS EN 62305 series, which simplifies the calculation steps and outlines Lightning Protection Levels (LPL).
EEP Calculator: A widely cited Lightning Protection Risk Assessment Calculator available via the Electrical Engineering Portal (EEP).
Calculus by Ingesco: An online calculator that generates personalized technical reports and coverage simulations based on IEC 62305-2. Key Risk Categories Severity of injury (Se) Frequency of exposure (Fr)
Calculators generally evaluate four types of loss as defined by the standard:
Calculation of lightning protection measures | Calculus by INGESCO
The tool will compute Risk Reduction Factor (RRF) and map to SIL CL (1, 2, or 3 for most machinery). Using these parameters, the tool automatically computes the
An IEC Risk Assessment Calculator is a digital tool (often an Excel-based spreadsheet or standalone software) designed to automate the risk evaluation process defined by IEC 62061 (Safety of machinery – Functional safety of electrical, electronic and programmable electronic control systems) and ISO 13849-1.
The calculator helps you determine:
Using these parameters, the tool automatically computes the Risk Level (e.g., Low, Medium, High) and the required Performance Level (PLr) or Safety Integrity Level (SIL) for your machine’s safety functions.