# Energy Consumption Calculator

 Electronic appliance -- Select -- Air conditioner Clothes dryer Clothes iron Dishwasher Electric kettle Fan Heater Microwave oven Desktop computer Laptop computer Refrigerator Stereo receiver Television Toaster oven Vacuum cleaner Washing machine Water heater Power consumption watts (W) kilowatts (kW) Hours of use per day h/day Energy consumed per day kWh/day Energy consumed per month kWh/month Energy consumed per year kWh/year

### Electricity Consumption Calculation

This Energy Consumption Calculator or Electricity Consumption Calculator allows you to calculate the energy/electricity consumed by your home appliances, or industrial loads. The parameters required for calculating energy consumption of a Load are the wattage rating of the load and number of hours the load is powered.

Electricity/Energy consumption Formula:

The electricity E in Watt-hours (Wh) per day is equal to the power P in watts (W) times number of usage hours per day:

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

For example, if a 70-watt television is used three hours per day. The electricity consumption will be:

70 watts x 2 hours = 140 Wh/Day

= 0.140 kWh/day

Electricity/Energy consumed per month:

Now that we know how many kWh/day the appliance uses per day, we can calculate the usage for a month by multiplying it with 30:

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

0.140 kWh/day x 30 Days = 4.2 kWh/Month

Electricity/Energy consumed per year:

Similarly we can calculate the usage for a year by multiplying the Daily usages with 365:

Daily Usage (kWh) x 365 (Daily) = Yearly Usage (kWh/Year)

0.140 kWh/day x 365 Days = 51.1 kWh/Year