UK
UK Electricity Cost Calculator
Estimate appliance costs using pence per kWh. Change the inputs below and the estimate updates immediately.
Input
Your numbers
Calculated result
Estimated usage cost
GBP 30.00
Energy used
120 kWh
Estimate only. Verify important decisions with an appropriate professional or official source.
How to use it
A quick estimate, without the spreadsheet.
Inputs and units
Enter appliance watts, daily hours, days used, energy price in pence per kWh and allocated extra charges in GBP.
Formula
Units = watts / 1,000 × hours × days. Cost = units × pence/kWh / 100 + extra charges.
Worked example
1,000 watts for four hours daily over 30 days uses 120 kWh; at an illustrative 25p/kWh the energy cost is £30.
Assumptions and limitations
An appliance estimate, not a supplier bill. Enter your current tariff. Standing charges, time-of-use rates and unentered adjustments are excluded. Thermostatic appliances may cycle below rated power.
Keep calculating
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