How to Calculate your Electricity Usage

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How to Calculate your Electricity Usage  

To calculate your electric consumption, you will first need to understand how many units you consume in a day through the electric appliances you have within the house. You can simply multiply the consumption units of these appliances by the number of hours you use it in a day and you will have the number of watt-hours consumed each day by these appliances.   

  

  1. How to calculate Watt-hours Per Day  

For Example: 

Device Wattage (watts) x Hours Used Per Day = Watt-hours (Wh) per Day  

  

If you use a table fan that uses 20 watts for 4 hours per day, then the calculation is  

            20W x 4 hours = 80 daily watt hours (Wh) consumption  

  

  1. How to calculate Watt-Hours to Kilowatt 

  

The energy bills you receive are calculated in Kilowatt-hour consumption; you can arrive at it by dividing watt-hour usage / 1000  

  

For Example: 

Device Usage (Wh) / 1000 (Wh/kWh) = Device Usage in kWh, Kilowatt-hours = watt-hours ÷ 1000  

  

To know the kilowatt-hour consumption, divide the energy by 1000.   

  

The energy in kilowatt-hours is equal to the watt-hours divided by 1,000.  

  

A smart television using 500 Wh of electricity per day  

500 / 1000 = 0.5 kWh  

  

  1. How to calculate Kilowatt-hour consumption for a month  

  

For Example:  

Daily Usage (kWh) x 30 (Days) = Approximate Monthly Usage (kWh/Month)  

  

A smart television using 0.5 kWh of electricity per day  

0.5 kWh x 30 Days = 15 kWh/Month  

  

Let’s move to the monthly electric bill calculations  

 
You must know how much electricity the appliances consume on a daily and monthly basis. It may not seem a lot however when all the appliances in the house start adding up, the electric bills make a huge difference.   

  

How to calculate the charges towards the consumption of appliances.   

  

Cost per month = Monthly Usage (kWh) x Electric Rate (£/kWh)   

  

For Example:  

A smart television using 15 kWh/Month with an electric rate of £0.10/kWh  

15 kWh x £0.10 = £1.13/Month