ElecCalc

ElecCalc provides a collection of free, mobile‑first calculators that implement Australian and New Zealand electrical standards such as AS/NZS 3008.1.1:2025, AS/NZS 3000, and IEC 60255. The toolset includes core calculations like cable sizing, voltage drop, maximum demand, conduit fill, earth conductor and circuit‑breaker selection, as well as safety‑focused analyses for arc‑flash energy, high‑demand earthing and RCD choice. Additional modules cover renewable‑energy and electric‑vehicle installations, offering solar‑PV sizing, voltage‑rise checks and EV‑charger cable and breaker sizing.

The application is delivered as a progressive web app that works offline and requires no user registration, login or subscription. All twenty‑five calculators are accessible without watermarks or paywalls, and the interface is designed for quick use on smartphones or tablets.

ElecCalc is aimed at electricians, contractors and other professionals who need to perform compliance‑checked electrical calculations on site or in the field, particularly those working to Australian standards. It consolidates a wide range of standard‑based calculations into a single, free, offline‑capable package.