Electricity Cost Calculator

Calculate the electric cost of items or machines you run.

Simple Electricity Cost

h/day
$

Electrical Cost of Many Items

$
Item - optional
Power Consumption
Usage time
h/day

Electricity Cost

  • Calculate the electric cost of an item, by adding item power consumption, usage time per day, and the tariff per KWh (means one Kilowatt-hour "KWh" cost).

  • Formulas:

    Converting watts and kilowatts

    Kilowatts to Watts formula:
    Watts (W) = KW x 1000
    1 KW = 1 x 1000 = 1000 Watts (W)

    Watts to Kilowatts formula:
    Kilowatts (KW) = W ÷ 1000
    100 W = 100 ÷ 1000 = 0.1 Kilowatts (KW)

    KWh consumption formula:

    KWh consumption (energy) = Power x Time
    Example:
    Power = 2 KW
    Time = 3 hours
    kWh = 2 x 3 = 6 KWh

    KWh Cost formula:

    Cost = KWh used x Tariff per KWh
    Example:
    Power = 2 KW
    Time = 3 hours
    So the kWh = 2 x 3 = 6 KWh
    Tariff = $0.10 per KWh
    Cost = 6 KWh x $0.10/KWh = $0.60