Electricity Cost Calculator
How much an appliance costs to run per day, month and year. Free, no sign-up, works in your browser.
🔒 100% private — processing happens in your browser. Nothing is uploaded.
How to use the electricity cost calculator
- Pick a typical appliance or enter the wattage from its label (1 kW = 1000 W).
- Set how many hours a day and days a week you use it, and your unit price from your electricity bill.
- See the cost per hour, day, week, month and year.
The price per kWh is on your bill — in Ireland it is often 30–45 cent including VAT, cheaper at night on smart tariffs. Heating water and rooms (showers, immersions, heaters) costs the most; chargers and LED bulbs cost very little. Typical appliance figures are averages — check the label for yours.