Electricity Cost Calculator
Calculate how much any appliance costs to run per day, month, and year based on wattage and usage hours.
Check the appliance label or manual. 1 kW = 1000W
Check your latest power bill. AU average ~28–35¢/kWh
e.g. 5 for weekdays only
How to Use
1. Select a common appliance or choose "Custom" and enter the wattage 2. Enter how many hours per day the appliance runs 3. Enter your electricity tariff from your bill (¢/kWh) 4. Adjust days per week if it's not used every dayFinding your tariff: Check your electricity bill for "usage rate" or "energy charge" — usually shown as ¢/kWh. Australian averages range from 25–40¢/kWh depending on state and retailer.
Formula
kWh per day = Watts ÷ 1000 × Hours | Daily Cost = kWh × Tariff rateFrequently Asked Questions
How do I find the wattage of my appliance?
Check the label on the appliance (usually on the back or bottom), the manual, or search the model number online. Wattage is listed as "W" or "kW".
Why is my air con so expensive to run?
A 2.5kW split system running 8 hours/day at 30¢/kWh costs about $2.20/day — or $67/month. A 5kW unit doubles that. Running time and the thermostat setting have the biggest impact.
How can I reduce my electricity bill?
Biggest wins: switch to a cheaper energy retailer (compare at energymadeeasy.gov.au), run appliances off-peak, upgrade old appliances (dryers, fridges) to 5-star rated ones, and install solar.
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