## Energy cost calculator

Electrical energy cost calculator and how to calculate.

## Energy cost calculation

## Energy consumption calculation

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)}## Energy cost calculation

The energy cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar:

Cost

_{($/day)}=E_{(kWh/day)}× Cost_{(cent/kWh)}/ 100_{(cent/$)}

## See also