Do you know that there are peak and off-peak hours for electric consumption? Since the tariff are given in kWh kilowatt hour , here is the formula to convert the Watt and Hour into kWh.
Electric Energy Bill Calculator It is very easy to calculate the electricity bill and tariff for electrical engineering students and professionals but, it makes confusion for non-technical people that concern about their electric charges from the electricity service providers.
Note: There is MD management software available in the market that enables users to actively managing the use of energy.