Electrical
Electricity Cost Calculator
Work out what any appliance or piece of equipment costs to run.
Result
Uses a flat rate per kWh. Time-of-use and tiered tariffs mean the same consumption can cost noticeably more or less depending on when it runs.
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About this calculator
Where do I find my rate per kWh?
On your electricity bill. Divide the total by the kWh used to get the effective rate including standing charges and taxes, usually higher than the headline unit rate.
What uses the most electricity in a home?
Heating and cooling, then water heating, then laundry and cooking. Standby loads matter far less than most people assume.
The formula
cost = watts ÷ 1,000 × hours × rate per kWh
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