Electricity 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.
Your results
| Appliance | kWh | Cost |
|---|---|---|
| Ducted air conditioner | 288 | $92.16 |
| Fridge | 108 | $34.56 |
| Clothes dryer | 24 | $7.68 |
Calculation breakdown
- Energy per appliance
- kWh = (watts ÷ 1000) × hours per day × days used
- Cost
- Total cost = 420 kWh × $0.32/kWh = $134.40
Assumptions
- The electricity tariff entered applies equally to every appliance (no time-of-use pricing).
- Kilowatt entries are converted to watts before calculating energy use.
- Weekly, monthly and annual figures are extrapolated from your average daily usage.
- Standby power draw is not included unless you add it as its own row.
How this calculator works
Energy use in kWh is power in kilowatts multiplied by hours of use. Multiply that by your electricity tariff in dollars per kWh and you have the running cost — for one appliance or your whole list.
Frequently asked questions
Where do I find the wattage?
On the compliance plate or label on the appliance, or in the manual. A plug-in energy meter gives real-world figures.
What tariff should I use?
Check the usage rate on your latest electricity bill in cents per kWh, then convert to dollars.
Does standby power matter?
Individually it is small, but standby across a whole home can add up to a noticeable share of the bill.
Actual prices, usage, efficiency and savings vary by provider, equipment, location and behaviour.