Free, practical calculators for Australian trades and homeowners. Pick a tool to get started.
Work out the right generator kVA from your actual connected loads — single or three-phase, with line current and outlet guidance.
Open calculator →Usage or bill, roof direction, phase and battery plans in — a system size, panel count and inverter size out, ready for your quote call.
Open calculator →See how many km/h you'd get charging at home on single or three-phase power, compare it to public fast charging, and check your state's installation rules.
Open calculator →Get a rough kW size and system-type recommendation for cooling any room — built for homeowners, not just tradies.
Open calculator →Work out the litres you'll need from wall area and number of coats, with deductions for doors and windows and rates for major brands.
Open calculator →How many tiles you'll need, with the right wastage allowance for straight, diagonal or herringbone layouts — built for DIYers.
Open calculator →Kindatradie is a free, growing toolkit of calculators for Aussie tradies, renovators and DIYers — more tools are added regularly.