Energy Usage Calculator
|Appliance||Power Rating (Watts)||Average Daily Usage (Hours)||Quantity|
The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times number of usage hours per day t divided by 1000 watts per kilowatt:
E(kWh/day) = P(W) × t(h/day) / 1000(W/kW)
Determining how much electricity your appliances and home electronics use can help you understand how much money you are spending to use them. Use the information above to estimate how much electricity an appliance is using and how much the electricity costs so you can decide whether to invest in a more energy-efficient appliance.
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