Gas consumption calculator
How much gas does a flat or house of your size need? The calculator estimates the annual consumption using the values of the Heizspiegel 2026 (heating benchmark) and assesses your own consumption.
Open the calculatorConsumption
Convert gas: cubic metres to kWh
Your gas meter measures cubic metres, but your bill is calculated in kilowatt hours. With the calorific value (Brennwert) and conversion factor (Zustandszahl) from your bill, you can convert the consumption yourself.
Result
- Consumption in kilowatt hours
- Kilowatt hours per cubic metre
- Costs for this consumption
Would you like a specific quote? We compare the tariffs of the suppliers we work with and send you a quote as a PDF.
Request a quoteThe results are non-binding estimates for guidance only. What counts is your bill, your contract and your supplier's prices.
How it is calculated
Kilowatt hours = cubic metres × calorific value × conversion factor. The calorific value shows how much energy there is in one cubic metre of gas. The conversion factor takes into account the pressure and temperature of the gas at your meter, for example the altitude.
Both values are set by your network operator (Netzbetreiber). They are shown on your annual bill and can change slightly from year to year.
Worked example: 1,100 m³
1,100 m³ × 11.2 kWh/m³ × 0.95 = 11,704 kWh. At 11.9 ct/kWh, this consumption costs around €1,393.
- Consumption in kilowatt hours: 11,704 kWh
- Kilowatt hours per cubic metre: 10.64 kWh/m³
Frequently asked questions
How many kWh are in one cubic metre of gas?
Usually about 10 to 11 kWh. The exact value is the calorific value × conversion factor from your bill.
Why does the supplier bill in kWh?
Because the energy content of gas varies. You are billed for the energy supplied, not for the volume.
Where can I find the calorific value and conversion factor?
On your annual gas bill, usually in the section on how your consumption was determined. You can also ask your network operator for the values.
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Learn moreGet personal advice
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