Electricity Cost Calculator
Calculate how much it costs to run an appliance. Free, fast and easy to use.
How it works
Multiply the power of the appliance in kilowatts by the hours of use and by your electricity price. The calculator shows the cost per day, month and year, as well as the yearly energy consumption.
Formula
cost = W / 1000 × hours × €/kWh
Worked examples
- Power (W): 2000 · Usage per day (hours): 1 · Electricity price (€/kWh): 0.25 → Cost per day: €0.50
- Power (W): 150 · Usage per day (hours): 24 · Electricity price (€/kWh): 0.25 → Cost per day: €0.90
- Power (W): 10 · Usage per day (hours): 5 · Electricity price (€/kWh): 0.25 → Cost per day: €0.01
Calculations run locally in your browser. Results are for information only — for engineering, electrical or financial decisions, verify the assumptions and applicable standards.
Frequently asked questions
How much does it cost to run a 2,000 W heater for an hour?
2,000 W uses 2 kWh per hour. At €0.25 per kWh, one hour costs €0.50.
How do I find out how much power an appliance uses?
Check the rating plate or the manual, or measure it with a plug-in energy meter for the most accurate result.