Electricity cost calculator for any appliance

Updated 7 November 2026 · ClearCost UK · 4 min read

Type the watts of any appliance, how long you use it each day and your electricity price per kWh. The result shows the cost per hour, day, month and year.
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How to use it

  • Find the watts on the appliance label (or divide amps × volts).
  • Choose the average hours you use it per day.
  • Enter your price per kWh in pence: it is on your electricity bill.

How the cost is worked out

Cost per hour = watts ÷ 1,000 × price per kWh. Multiply by hours a day for the daily cost, and by about 30.4 days for a month or 365 for a year.

Sources and further reading

Questions people ask

How do I find my price per kWh?
Look for the unit rate on your latest electricity bill or in your online account. It is shown as pence per kWh (p/kWh).

Results are estimates for information only, not financial advice. Read the full disclaimer.

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