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Electricity Cost Calculator

Calculate how much any appliance costs to run based on Australian electricity rates.

AU RatesAny Appliance

Appliance Wattage (W)

Hours per Day

Days per Week

Rate (c/kWh) — AU average ~30c

About this tool

Calculate how much any appliance costs to run based on Australian electricity rates. MyCalcTools calculators are designed for quick everyday estimates with clear inputs, instant results and no account required. Results are provided for general information and planning, not as professional financial, medical, legal or trade advice.

How to use it

Enter the values requested in the calculator fields.
Choose the option that best matches your situation, unit or goal.
Press the calculate button and review the result summary.
Adjust your inputs to compare different scenarios.

Common use cases

Checking a quick estimate before making a decision.
Comparing two or more everyday scenarios side by side.
Planning budgets, meals, projects, dates or personal routines.
Double-checking manual calculations with a simple online reference.

About the Electricity Cost Calculator

This electricity cost calculator estimates how much a specific appliance or device costs to run, based on its power rating (in watts or kilowatts), how many hours per day you use it, and the cost of electricity per kilowatt-hour (kWh) in your area. It helps you identify high-cost appliances and find where to reduce your energy bill.

How to Use It

Enter the power rating of your appliance in watts (found on the label or manual) — or kilowatts for large appliances.
Enter how many hours per day you use it on average.
Enter your electricity tariff in cents per kWh (check your latest electricity bill — Australian rates typically range from 20–40 c/kWh).
The calculator shows daily, weekly, and annual running costs.

Reducing Your Electricity Bill

The biggest energy users in Australian homes are typically air conditioning and heating (35–50% of bills), hot water systems (20–30%), and refrigerators (10–15%). Using this calculator to check the hourly cost of leaving your air conditioner running overnight compared to using a fan can reveal significant savings. Switching from a 2,400-watt electric kettle to only boiling the water you need, at 30 c/kWh, saves around $50–$70 per year. Small behaviour changes, identified through this kind of calculation, add up quickly.

Check the rating label on the back or underside of the appliance, or look in the manual. It will be listed as watts (W) or kilowatts (kW). If you only see amps (A) and volts (V), multiply them together to get watts: W = A × V. Australian mains voltage is 230V.