Electricity Bill Calculator | kwh calculator

Electricity Bill Calculator | kwh calculator

Electricity consumption calculator | How to calculate electricity bill from meter reading

Using this household electricity consumption calculator you can easily calculate electricity cost of household appliances .
Using below calculator you can easily calculate the electricity cost of electronic devices like Air conditioner,CRT Monitor,Clothes dryer,Clothes iron,Dishwasher,Electric kettle,Fan,Game Console,Heater,Microwave oven,Desktop computer,Laptop computer,Printer,Refrigerator,Space Heater,Stereo receiver,Television,Toaster oven,Vacuum cleaner,Washing machine,Water heater,Wi-Fi Router etc.
Choose device type from “Typical appliance” list and country from “Select country” list(if your country is not in the list please select other country option).
Input the power use(wattage of device) ,Number hours of use per day , kilowatt-hour (kWh) cost(cost of electricity you can find in your electricity bill) and click the calculate button.This finally gives you electricity cost per day,per month,per year for the selected device.

Select country:
Electrical appliance:
Power Use:
Hours of use per day: h/day
1 kilowatt-hour (kWh) cost:
cost /day:
cost/month:
cost/year:





How Much  Electronic Appliance Use Each Day?

You all know how much electricity is important in our life. We can not live without electricity. Whether we are at home, in the school or in a mall, electricity is the used everywhere. Think, if there was no electricity then how would our life be? Neither computer nor mobile, nor bulb and fan.
Electronic appliance we use contributes to our monthly electricity bill.The contribution of some household devices small and some more than others like fridge, Air conditioner etc.
Using the Above tool you can calculate the monthly,yearly contribution of each device in your electricity bill.
You can use our Online tool(above) or below, I have explained to you in easy Step

  • Find out the watts each electronic device uses per day. 
  • Now Convert watts to kilowatts. (1 watt = kilowatts/1000) 
  • Find out the kilowatts an electronic appliance uses per month. 
  • Now Finally find out the electricity cost. 

Now we want to calculate the energy usage cost of a particular device is very simple.
you need to know two value, first, the electronic device’s wattage and second is the number of hours
use per day

How do you know the wattage of a device?

Usually, electronic devices have a wattage label listing how many watts they consume.
You can see the wattage label of the device on the electronic devices. please check on the bottom or back or in the device manual.
you can also Contact the manufacturer of the devices for knowing the wattage.you can also buy a wattage measuring device for calculating how much power the device uses.
I have given you home appliances power consumption table using this chart you can easily find out the wattage of specific device.it may vary,it will give you an approximate estimate.

Home appliances Electricity consumption table

House Appliance Type
Power Watts
Hours/Mo
kWh/Mo
Air Conditioner(Room) 6,000 BTU
750
120 – 730
90 – 548
Air Conditioner(Central) 2.5 Tons
3500
240 -730
1 – 47
Ceiling Fan
65
15 – 730
1 -47
Clock
5
730
4
Clothes Dryer
5000
6 – 28
30 – 140
Clothes Washer, Automatic (With Electric Water Heating)
1800
7 -40
13 -72
Clothes Washer, Automatic (With Non-Electric Water Heating)
500
7 -40
4 – 20
Coffee Maker
900
4 – 30
4 – 27
Computer (Monitor & Printer)
200
25 – 160
5 – 32
Crock Pot
250
8 – 24
2 – 6
Dehumidifier
350
120 – 730
42 – 256
Dishwasher (With Electric Water Heating)
1500
8 – 40
12 – 60
Dishwasher (With Non-Electric Water Heating)
400
8 – 40
3 – 16
Drill
300
3 – 7
1 – 2
Electric Blanket
180
30 – 90
5 – 16
Electric Heater (Portable)
1200
30 – 90
36 – 108
Fan (Portable)
115
18 – 52
2 – 6
Food Blender
390
3 – 5
1 – 2
Food Freezer (15 cu. Ft.)
335
180 – 420
60 – 141
Frying Pan / Hot Plate
1150
10 – 20
12 – 23
Furnace Fan Motor (Intermittent)
350
160 – 415
56 – 145
Furnace Fan Motor (Continuous)
350
730
256
Heating Pad
65
15 – 30
1 – 2
Heat Tapes
200
250 – 500
50 – 100
Humidifier (Portable)
100
80 – 540
8 -54
Iron (Hand)
1000
1 – 10
1 – 10
Lighting Single Lamp (60W)
60
17 – 200
1 -12
Compact Fluorescent (60W Equiv)
18
17 – 200
3 -4
Ceiling Fixture (3 bulbs)
180
6 – 195
1 – 35

How do I calculate the device’s energy cost?

Calculate the Energy consumption per day using below formula

E(kWh/day) = P(W) × t(h/day) / 1000(W/kW)

Calculate Electricity cost per day using below formula

Electricity Cost($/day) = E(kWh/day) × Cost(cent/kWh) / 100(cent/$)

I have taken electricity cost in cent you can take your country currency,you can find per Unit Cost on
your electricity bill.

Find Out Watts usage Per Day 

you can find devices wattage on your devices or you can use the above power consumption chart.
you just Need to multiply your electronic devices wattage by the number of hours operate it in a day
The result will provide you the number of watt-hours used each day.
Let’s take an example, you use your washing machine 1 hour per day.
Now We need to multiply the watts(350) by the number of the hour used(1).
you can find that the washing is consuming 350 watt-hours per day.

350 watts X 1 hours =
350 watt-hours per day

Watt-Hours to kilowatt-hours Conversion 

Do you know that electricity is calculated in kWh(kilowatt-hours) on your electricity bill.
So we need to convert watt-hours to kilowatt-hours
1 kilowatt is equal to 1,000 watts.
To find out the how many kWh a device consume, we need to divide the watt-hours by 1,000.
that means you need to divide 350 watt-hours by 1,000.
0.350 kWh washing machine consume per day.

350 watt-hours per day / 1000 =
0.350 kWh per day

Calculate energy Usage for a Month 

0.350 kWh washing machine consume per day.
For Calculating the energy Usage for a Month, multiply that by 30
to calculate your rough usage for the month. So daily usage is 0.350 kWh, then monthly usage would be 10.5 kWh.

.35 kWh per day X 30 days =
10.5 kWh per month

Find Out the usage Cost 

This is final step you must know how much you pay per kWh?you can refer to your last month
electric bill to see the cost of per kWh.
Let’s take you pay 10 cents per kWh.
you need to Multiply your electricity rate (0.10) by your monthly consumption (10.5) to calculate how much your washing is costing you in a month ($1.05).

10.5 kWh per month * 0.10 per kWh =
$1.05 per month

Ashok Patel

I'm an electronic engineer working in a multinational company,having good experience on Electronics and electrical engineers design and oversee production of electronic equipment such as radios, televisions, computers, washing machines and telecommunication systems.I like to do RND and Research.I also have hands on experience graphic design software and in web designing having great command on ASP.NET, HTML5, JavaScript, T-SQL, JQuery.

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