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Appliance Running Cost Calculator

Estimate electricity costs using watts, hours, days and your own electricity unit rate. Compare two appliances without guessing a tariff.

Enter your figures

Appliance power (watts)

Hours used per day

Days used per week

Electricity unit rate (pence/kWh)

Standby power (watts)

Standby hours per day

Comparison appliance power (watts; enter 0 if not comparing)

Enter your figures and select Calculate.

Assumptions and limitations

Energy cost estimates exclude standing charges and appliance purchase costs. Use your bill for the correct pence-per-kWh rate. Power consumption can vary in real use. Active hours apply only on the selected days; standby hours apply every day. Do not count the same hours as both active and standby.

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All figures are calculated in your browser. No financial figures are sent to our servers by this calculator. Results are general information, not personalised financial advice.