Sparky Tools

Your Digital Toolbox

Free AS/NZS electrical calculators and tools built for Australian electricians. Cable sizing, voltage drop, max demand, and more — right in your browser.

AI Assistant

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Sparky AI

AU/NZ electrical standards & regulations assistant — AS/NZS 3000, hazardous areas, state acts, and more

AS/NZS Calculators

Standards-based electrical calculators

Cable Sizing

Calculate cable size based on load, length, and installation method per AS/NZS 3008

Voltage Drop

Check voltage drop percentage for cable runs per AS/NZS 3008

Max Demand

Calculate maximum demand using AS/NZS 3000 diversity factors

Conduit Fill

Determine minimum conduit size for cable groups per AS/NZS 3000

Cable Derating

Calculate derating factors for grouped cables per AS/NZS 3008

RCD Requirements

Check RCD requirements by circuit type and location per AS/NZS 3000

Earth Fault Loop

Design check, dead test, and live test — verify fault loop impedance per AS/NZS 3000

Unverified

HV Cable Sizing

Size high voltage cables 3.3kV to 33kV per AS/NZS 3008.1.2

Standards verification in progress

Solar Installer Tools

AS/NZS 5033 & CEC tools for solar

NEW

String Sizing

Calculate min/max panels per string with temperature derating

NEW

MPPT Split

Distribute panels across MPPT trackers optimally

NEW

Tilt & Azimuth

Optimal panel angle and orientation for your location

Unverified

DC Cable Sizing

Size DC solar cables with voltage drop per AS/NZS 5033

Standards verification in progress

Unverified

Inverter Sizing

Check DC/AC ratio against CEC oversizing limits

Standards verification in progress

Unverified

Compliance Checker

Verify installation against AS/NZS 5033 and CEC requirements

Standards verification in progress

Instrumentation

Tools for instrument technicians

NEW

4-20mA Scaler

Convert between 4-20mA signals and process values

NEW

RTD Lead Error

Calculate temperature error from RTD lead wire resistance

NEW

Thermocouple

Convert mV to temperature with cold junction compensation

NEW

Calibration

Calculate error, deadband, hysteresis from test readings

NEW

PID Tuning

Calculate controller parameters from step test data

NEW

SIL Verification

Verify safety integrity levels per IEC 61511 / AS 61511

Workflow Tools

Tools for the job

NEW

Switchboard Builder

Build circuit schedules and order labels

NEW

Test Sheet

Generate AS/NZS 3000 electrical test reports

NEW

Equipment Register

Track test instrument calibration dates and due alerts

Fuel Calibration

Calibrate fuel dispensers and generate reports

Phone Sensors

Android PWA only

Coming Soon

Solenoid Tester

Test solenoids using phone magnetometer

Coming Soon

Spirit Level

Digital spirit level for mounting boards

Coming Soon

Lux Meter

Measure light levels for compliance checks