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United Kingdom Electricity Bill Calculator

Free United Kingdom electricity bill calculator with country-specific defaults and clear step-by-step results.

About United Kingdom Electricity Bill Calculator

Estimates a monthly electricity bill from kWh usage, the per-kWh rate and any fixed standing charge.

Formula

Formula

Bill = usage (kWh) × rate + fixed fee

Worked example

With the default values below, United Kingdom Electricity Bill Calculator returns Energy Cost of £80.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Monthly Usage (kWh)minimum 0
400
Rate per kWhminimum 0 GBP
0.2 GBP
Fixed Monthly Feeminimum 0 GBP
10 GBP

Results

Energy Cost
£80.00
Total Monthly Bill
£90.00
Daily Average
£2.95

Step by step

  1. 1Values used
  2. 2Formula
  3. 3Energy Cost= $80.00
  4. 4Total Monthly Bill= $90.00
  5. 5Daily Average= $2.95

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Rates vary by tariff and provider in United Kingdom — use the rate on your current bill.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Rates vary by tariff and provider in United Kingdom — use the rate on your current bill.

Frequently Asked Questions

How does this calculator work?

Estimates a monthly electricity bill from kWh usage, the per-kWh rate and any fixed standing charge.

Are the figures specific to United Kingdom?

Understanding your usage in kilowatt-hours and the rate makes it easier to cut costs or compare suppliers.

Related Calculators

United Kingdom specifics

Currency
£ GBPBritish Pound
Region
Europe
Country code
GB
Amounts look like
£1,234,567.89
Dates look like
9 Mar 2026
Units
metricWeek starts Monday

Results on this page are expressed in GBP (British Pound). Figures are estimates for general planning — confirm current rates and thresholds with the relevant United Kingdom authority before relying on them.

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United Kingdom Electricity Bill Calculator | Calcrivo