How is it calculated?
kWh = watts × hours ÷ 1,000
The power is printed on the appliance label or charger. Devices like fridges cycle on and off, so their real average draw is lower than the label.
Electricity cost calculator
Enter the appliance's power in watts, how many hours a day it runs and your electricity price. You get the energy use and the cost.
Last updated: · By Furkan Çetinkaya · About & Methodology
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Common questions
How much does a 2,000 W heater cost per hour?
It uses 2 kWh an hour, so multiply 2 by your price per kWh.
Where do I find my price per kWh?
On your electricity bill or your supplier's tariff page.