UK Energy Toolkit

Free calculator

Household electricity cost

Estimate your electricity costs including your daily standing charge.
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Use the pence per kWh on your bill or supplier account.

For a daily average, divide annual consumption by 365.

Enter 0 if there is no standing charge.

Estimated costs

Daily
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Weekly
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Monthly
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Annual
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Calculation explained

Daily cost = consumption × unit rate ÷ 100 + standing charge ÷ 100.

Weekly uses 7 days, monthly uses 365/12 days and annual uses 365 days.

Estimates assume your rate and usage stay unchanged. Use the rate you actually pay, including VAT where applicable. Figures are rounded for display only.