7 CALCULATORS
← All toolsHome & energy calculators
Know the cost before you commit. Estimate what an appliance costs to run, what charging an electric car costs, how long solar panels take to pay back, and compare an electric car with a petrol one over the years you expect to keep it.
For projects at home, work out how much paint, flooring or concrete a job needs from its measurements, with the assumptions stated on each page.
BillsElectricity running cost Estimate what an appliance costs to run for a chosen number of hours and days.Electric vehiclesEV charging cost Estimate cost, added range and ideal charging time for an electric car.Home investmentSolar payback estimator Estimate annual bill savings and simple payback time for a solar installation.DIY materialsPaint needed Estimate litres of paint required after accounting for coats, coverage and waste.DIY materialsFlooring cost Calculate how many square metres of flooring to order and what it may cost.ConstructionConcrete volume Estimate the concrete volume needed for a slab, footing or rectangular base.Electric vehiclesEV vs petrol running cost Compare yearly fuel cost for a petrol car and an electric car, and what the difference adds up to over the years you keep it.