Electricity Cost Calculator

See what an appliance or household load costs to run using your own tariff and schedule.

Your electricity cost will appear hereEnter appliance power, usage time and tariff.

Your electricity cost

Based on the schedule entered.

Usage estimate

Estimated monthly cost

£24.30

90 kWh per month

Cost per hour

£0.41

Cost per day

£0.81

Monthly energy use

90 kWh

Annual energy use

1,080 kWh

Estimated annual cost

£291.60

Average blended tariff

£0.27/kWh

The calculator combines appliance power, quantity, time and separate day and night tariffs.

Power multiplied by operating time.

kWh = kW × Hours

Energy multiplied by the applicable tariff.

Cost = kWh × Price per kWh

Weighted average of day and night rates.

Day share × Day rate + Night share × Night rate

Where can I find appliance wattage?

Check the appliance label, manual or manufacturer specifications. Actual consumption may vary by operating mode.

Why might measured cost differ?

Thermostats, standby use, cycling, efficiency, variable power and tariff charges can change real consumption.