Energy Calculators
27 free calculators in this category. Every result is worked out in your browser — nothing you type is sent anywhere.
Air Conditioner Running Cost Calculator
Estimate how much it costs to run your split-system or ducted air conditioner per hour, per day and over a typical Aussie summer.
Open calculatorAppliance Running Cost Calculator
Calculate what any appliance costs to run per hour, day, week, month and year from its wattage, hours of use and your electricity tariff rate.
Open calculatorControlled Load Calculator
Estimate the cost of a controlled load circuit, such as off-peak hot water or pool pumps, billed at a separate lower tariff.
Open calculatorElectricity Bill Check Calculator
Check whether your electricity bill adds up correctly by re-calculating it from your usage, tariff and supply charge.
Open calculatorElectricity Cost Calculator
Work out what your household appliances actually cost to run in Australia per day, week, month and year based on their wattage and typical usage hours.
Open calculatorElectricity Demand Charge Calculator
Estimate the demand charge component of your electricity bill based on your peak kW demand and your network's demand tariff rate.
Open calculatorElectricity Tariff Comparison Calculator
Compare two electricity plans side by side using your usage, their usage rates and daily supply charges to see which is cheaper.
Open calculatorEnergy Efficiency Upgrade Payback Calculator
Calculate how many years it takes an energy-efficient appliance or upgrade to pay for itself through lower electricity bills.
Open calculatorEnergy Rebate Estimate Calculator
Estimate how a government or state energy bill rebate reduces your electricity bill over the rebate period.
Open calculatorEV Charging Cost Calculator
Calculate the cost to charge an electric vehicle in Australia, including charging losses, driving range added and the resulting cost per 100 km travelled.
Open calculatorGas Bill Calculator
Estimate your natural gas bill from your usage in megajoules, your unit rate and daily supply charge.
Open calculatorHeat Pump vs Electric Hot Water Calculator
Compare the annual running cost and payback period of a heat pump hot water system versus a standard electric storage system.
Open calculatorHeater Running Cost Calculator
Calculate the cost of running an electric heater, panel heater or reverse-cycle system through a cold Australian winter.
Open calculatorHome Battery Payback Calculator
Work out whether a home battery pays for itself by comparing stored energy value against the feed-in tariff forgone, including round-trip losses.
Open calculatorHot Water System Cost Calculator
Compare electric, gas, solar and heat pump hot water systems on upfront price and yearly running cost to find the cheapest option long term.
Open calculatorHousehold Carbon Emissions Calculator
Estimate the carbon dioxide emissions from your household's electricity and gas usage using an editable grid emissions factor.
Open calculatorKilowatt-Hour Cost Calculator
Work out the running cost of any appliance in cents per hour or per use, based on its wattage and your electricity tariff.
Open calculatorPeak vs Off-Peak Usage Calculator
Compare your electricity cost under a flat tariff versus a time-of-use tariff with separate peak, shoulder and off-peak rates.
Open calculatorPool Pump Running Cost Calculator
Estimate the daily, monthly and annual running cost of your swimming pool pump based on its wattage and hours of operation.
Open calculatorSolar Feed-In Tariff Calculator
Calculate how much credit you could earn from exporting excess solar electricity back to the grid at your retailer's feed-in rate.
Open calculatorSolar Panel Savings Calculator
Estimate annual bill savings and the payback period for a rooftop solar system based on system size, self-consumption rate and feed-in tariff.
Open calculatorSolar Payback Calculator
Estimate the payback period and long-term savings of a rooftop solar system in Australia after rebates, feed-in tariffs and annual panel degradation.
Open calculatorSolar Self-Consumption Calculator
Estimate how much of your solar generation you use directly at home versus export, and the resulting bill savings.
Open calculatorSolar System Size Calculator
Estimate the solar panel system size in kilowatts needed to cover your household's daily electricity usage.
Open calculatorStandby Power Cost Calculator
Estimate how much it costs each year to leave appliances on standby rather than switching them off at the wall.
Open calculatorWater Bill Calculator
Estimate your water bill from usage in kilolitres, your utility's usage charge and fixed service charges.
Open calculatorWater Usage Calculator
Estimate your household's daily and annual water usage in kilolitres from showers, taps, laundry and other common activities.
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