AUSTRALIA · HOME ENERGY TOOLS
Use practical calculators to turn electrical input power, kilowatt-hours, electricity tariffs and usage time into clear household energy cost estimates.
Home energy calculators
AIR CONDITIONING
Air Conditioner Running Cost Calculator
Estimate hourly, daily, weekly, monthly and yearly air-conditioner running costs using electrical input power and your electricity tariff, or calculate an annual estimate from Zoned Energy Rating Label data.
Includes Power & Usage and Energy Label methods. Your entries are calculated in your browser.
APPLIANCES
Appliance Running Cost Calculator
Estimate hourly, daily, weekly, monthly and yearly appliance electricity costs from input power and your tariff, or use annual kWh from an Energy Rating Label.
Includes Power & Usage and Energy Rating Label methods. Calculations stay in your browser.
How HomeBillLab calculates estimates
Our calculators explain the formula, the assumptions and the source data used. For more detail, see the HomeBillLab Methodology and Sources.
SOLAR & BATTERIES
Solar & Battery Savings Calculator Australia
Estimate solar self-consumption value, export credits and a simple battery payback using your own tariffs and battery inputs.
Includes solar-value, excess-solar battery shifting and off-peak tariff-arbitrage methods.
HEATING
Home Heating Running Cost Calculator Australia
Estimate heating costs for direct electric heaters, reverse-cycle air conditioners and gas heaters using your own tariff and usage pattern.
Includes input-power, heat-output + COP, gas-input and known annual energy methods.
HOT WATER
Hot Water Running Cost Calculator Australia
Estimate hot water running costs from litres, temperature rise, system type and your electricity or gas tariff, or use a known annual energy figure.
Supports direct electric, heat pump and gas scenarios. Calculations run in your browser.
REBATES & UPGRADES
Energy Rebate & Upgrade Cost Calculator Australia
Estimate out-of-pocket upgrade cost after a confirmed rebate, grant or discount, with an optional simple payback estimate.
Does not determine rebate eligibility or hard-code temporary program amounts.
INSULATION
Insulation R-Value Calculator Australia
Compare insulation R-values, U-values and simplified conductive heat flow, or add known layer R-values together.
A transparent physics comparison — not a guaranteed bill saving or NCC compliance result.
ELECTRICITY
Electricity Bill Calculator Australia
Estimate a household electricity bill from kWh usage, c/kWh rates and the daily supply charge, with single-rate and time-of-use modes plus optional controlled load and solar export.
Uses the rates from your own bill or plan. Calculations run in your browser.