Energy Consumption Calculator

Energy Consumption Calculator. kWh Calculator.
Typical appliance:
Power consumption:
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


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)