This converts the entered meter volume using the factors from your bill. It is not a bill or a tariff quote.
Use the figures from your bill
Gas bills commonly show a meter reading, a conversion to cubic metres, a correction factor, a calorific value and a conversion into kWh. Use the correction factor and calorific value printed on the relevant statement where available.
Choose the displayed meter unit carefully
Select cubic metres, hundreds of imperial cubic feet or raw imperial cubic feet according to the meter display. An imperial-unit mistake can make the result very different, so keep the selected unit beside the result.
How the conversion works
The tool first expresses the entered volume in cubic metres, then applies the correction factor and calorific value and divides by 3.6 to estimate kWh. It is a calculation aid, not a live tariff or a substitute for checking the bill’s own calculation.
If the bill still does not match
Compare the start and end readings, dates, unit labels and bill-specific factors. Ask the supplier which readings and factors were used if the billed kWh differs from your checked calculation.
Keep the result in context
The result covers the conversion you entered. It does not include a unit rate, standing charge, VAT treatment, account balance or other bill adjustment.
Common questions
Where do I find the correction factor and calorific value?
Look at the gas bill or statement for the calculation details used for that billing period. If they are missing, ask the supplier rather than inserting an assumed current value.
Why is this not the same as my final bill?
The conversion only estimates kWh from the entered meter volume and bill factors. A bill can also include rates, standing charges, dates, VAT, adjustments and account balances.