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Calculate the running cost of any appliance. Enter the wattage, usage hours, and your electricity rate to estimate daily, monthly, and yearly power costs.
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Result
Daily cost
Cost per day
$0.00
Weekly cost
Cost per 7 days
$0.00
Monthly cost
Average 30.44 days
$0.00
Yearly cost
Annual running cost
$0.00
Daily kWh
Energy consumed per day
0.0000 kWh
Annual kWh
Energy consumed per year
0.0000 kWh
Quick Reference — Running Costs at 30c/kWh
| Appliance | Watts | Hrs/day | Daily kWh | Annual cost |
|---|---|---|---|---|
| LED light bulb | 10W | 6 | 0.060 | $6.57 |
| CFL light bulb | 15W | 6 | 0.090 | $9.86 |
| Ceiling fan | 75W | 8 | 0.600 | $65.70 |
| Laptop | 65W | 8 | 0.520 | $56.94 |
| Desktop PC | 200W | 6 | 1.20 | $131.40 |
| TV (55") | 100W | 4 | 0.400 | $43.80 |
| Fridge | 150W | 8 | 1.20 | $131.40 |
| Washing machine | 500W | 1 | 0.500 | $54.75 |
| Dryer | 3,000W | 1 | 3.00 | $328.50 |
| Dishwasher | 1,800W | 1 | 1.80 | $197.10 |
| Air conditioner (split) | 2,500W | 4 | 10.00 | $1,095.00 |
| Heater (electric) | 2,400W | 4 | 9.60 | $1,051.20 |
| Pool pump | 1,500W | 6 | 9.00 | $985.50 |
| Hot water system (electric) | 3,600W | 3 | 10.80 | $1,182.60 |
| EV charger (7kW) | 7,000W | 2 | 14.00 | $1,533.00 |
| Microwave | 1,000W | 0.5 | 0.500 | $54.75 |
| Kettle | 2,200W | 0.25 | 0.550 | $60.23 |
| Hair dryer | 1,800W | 0.25 | 0.450 | $49.28 |
| Iron | 2,000W | 0.5 | 1.00 | $109.50 |
| Toaster | 900W | 0.15 | 0.135 | $14.78 |
Click any row to load it into the single appliance calculator.
Australian electricity rates
The national average is approximately 30c/kWh, but rates vary significantly by state:
Check your electricity bill for your actual usage rate. Rates shown are approximate residential averages.
Understanding your bill
Your electricity bill has two main charges: the supply charge (a fixed daily fee for being connected, typically 80c-$1.50/day) and the usage charge (cost per kWh of electricity you consume). A kilowatt hour (kWh) is 1,000 watts used for one hour — e.g. a 2,000W heater running for 30 minutes uses 1 kWh.
Tips to reduce electricity costs
The formulas
Energy usage:
kWh = Watts ÷ 1000 × Hours
Cost:
Cost = kWh × Rate
(Rate in $/kWh — divide cents by 100)
Compare energy plans
Use the Australian Government's Energy Made Easy ↗ to compare electricity plans in your area and potentially save on your bills.
To calculate how much an appliance costs to run, you need three numbers: the wattage (W), hours of use per day, and your electricity rate in cents per kilowatt hour (c/kWh). First, convert watts to kilowatts by dividing by 1,000. Then multiply by the hours used to get daily kWh. Finally, multiply by your rate (converted to dollars) for the daily cost. For example, a 2,000W heater running 4 hours a day at 30c/kWh costs 2 × 4 × $0.30 = $2.40 per day, or about $876 per year.
Australian residential electricity rates vary by state, retailer, and plan type. As of 2025, the national average sits around 30 cents per kWh, though South Australia tends to be the most expensive at around 40c/kWh, while Queensland is often the cheapest at around 25c/kWh. Many retailers offer time-of-use tariffs with cheaper off-peak rates (often 15-20c/kWh) during overnight hours. Check your most recent bill or contact your retailer for your exact rate — it makes a big difference to annual cost calculations.