Electricity Bill Calculator
The Electricity Bill Calculator estimates the monthly running cost of any appliance from its wattage, daily usage hours, and your local rate per kWh.
See what an appliance really costs
Energy use is power multiplied by time. Enter an appliance's wattage and how many hours a day it runs, plus your electricity rate, and the tool computes the daily, monthly, and yearly cost. It converts watts to kilowatt-hours (the unit you are billed in) automatically: a 1,000 W heater for 5 hours uses 5 kWh a day.
Find the energy hogs
Running the numbers for your air conditioner, water heater, fridge, or gaming PC reveals which devices dominate your bill - usually anything that heats, cools, or runs constantly. That makes it easy to target savings. For vehicle fuel costs instead, use the Fuel Cost Calculator.
Frequently Asked Questions
How is appliance electricity cost calculated?
Multiply the appliance wattage by hours used to get watt-hours, convert to kWh, and multiply by your rate per kWh.
What is a kWh?
A kilowatt-hour is the energy of using 1,000 watts for one hour - the unit electricity providers bill you in.
Which appliances cost the most to run?
Typically those that heat or cool (heaters, air conditioners, water heaters) or run continuously, like refrigerators.
Where do I find an appliance's wattage?
It is usually on a label on the appliance or in its manual, listed in watts (W).
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