Appliance Electricity Cost Calculator
Calculate the running cost of any appliance from its wattage and your electricity rate. Free energy cost calculator.
One kilowatt-hour (kWh) is 1000 watts running for one hour.
Frequently asked questions
- How is electricity cost calculated?
- Watts times hours divided by 1000 gives kWh per day, multiplied by your rate per kWh.
- Where do I find my rate?
- On your electricity bill, shown as cents or currency per kWh. Rates vary by region and time of use.
- Why is my meter reading different?
- Billing includes taxes, delivery charges and sometimes tiered pricing. This estimates energy charges only.
- Which appliances cost the most?
- Heating, cooling, water heating and drying usually dominate. A 1500 W heater running 3 hours a day is about 135 kWh a month.
This tool runs entirely in your browser. No data is uploaded anywhere.