Electricity Cost Calculator
Work out what an appliance costs to run from its wattage and your tariff. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Cost per month
27.00
- Energy per day
- 3.00 kWh
- Energy per month
- 90.0 kWh
- Cost per day
- 0.90
- Cost per year
- 324.00
- Cost is shown in the same currency as the price you enter.
Good to know: cost = kWh × price
About this tool
Formula
cost = kWh × price
Questions people ask
How do I find how much a heater costs to run?
Divide its watts by 1,000 for kW, multiply by hours used, then by your price per kWh.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators