Take control of your electricity bill with the following energy calculator. See how much your appliances cost and estimate your next bill!
How can I tell how much electricity I use each day?
To calculate your power consumption, all you need is a simple formula:
1. Calculate the watts each device uses per day
2. Convert watts to kilowatts. There are 1000 watts in one kilowatt.
3. Determine the kilowatts an appliance uses per month.
4. Figure out the cost. (Some multiplication required.)
To start you’ll need the device’s wattage and an estimated number of hours you use it per day. If you find that your bill is too high, it might be time to shop for a new energy plan.
Most devices have a label listing how many watts they use. You can find this wattage label either on the device (usually on the bottom or back) or in the owner’s manual.
We have listed the wattage of all of our electric appliances, you can find it on the product pages.
Let's calculate the energy consumption!
The first step in calculating your energy consumption is to figure out how many watts each device uses per day. Just multiply your appliance’s wattage by the number of hours you use it in a day. This will give you the number of watt-hours consumed each day.
Calculate Watt-hours Per Day
Device Wattage (watts) x Hours Used Per Day = Watt-hours (Wh) per Day
Example: A 125-watt fan used three hours per day
125 watts x 3 hours = 375 Wh/Day
However, electricity on your bill is measured in kilowatt-hours (kWh), not watt-hours. One kilowatt is equal to 1000 watts, so to calculate how many kWh a device uses, divide the watt-hours from the previous step by 1000.
Convert Watt-Hours to Kilowatts
Device Usage (Wh) / 1000 (Wh/kWh) = Device Usage in kWh
Example: A fan using 375 Wh of electricity per day
375 / 100 = 0.375 kWh
Now that we know how many kilowatt-hours the appliance uses per day, we have to estimate that usage over a month. Let’s multiply by 30 days to simulate an average month.
Find Your Usage Over a Month
Daily Usage (kWh) x 30 (Days) = Approximate Monthly Usage (kWh/Month)
Example: A fan using 0.375 kWh of electricity per day
0.375 kWh x 30 Days = 11.25 kWh/Month
So, a 125-watt fan that you use for three hours per day adds up to 11.25 kilowatt-hours of energy per month. This is your fan’s energy consumption.
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