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Gas Consumption Calculator

Calculate gas consumption in kWh, annual heating cost, monthly cost and an estimated CO₂ footprint.

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Convert gas use into kilowatt hours and estimate annual heating cost, monthly cost and a rough CO2 footprint. This helps households, owners, tenants and landlords compare energy cost, price assumptions and usage scenarios.

Display currencyChoose the currency symbol for entered amounts and results. No exchange-rate conversion is applied.
UnitsMetric units are the international default. Switch to US or UK units for gas volume and energy content when your comparison uses them.
Enter your annual gas consumption in cubic meters. The calculator converts it into kWh using calorific value and volume correction factor, then derives cost and CO₂ estimates from it.
Choose H-gas or L-gas as a rough default if the exact calorific value is not available. You can still override the calorific value.
The calorific value is often shown on your gas bill. Together with the volume correction factor, it directly affects the conversion from m³ to kWh.
The conversion factor is also often listed on the bill. Together with the calorific value it turns volume into a more realistic energy figure.
Use the unit price from your tariff or a realistic estimate for a quick cost comparison.
The base fee can make up a noticeable share of total cost, especially at lower consumption levels.
This is used to estimate the CO₂ footprint based on your calculated energy consumption.
FAQ

FAQ about Gas Consumption Calculator

How do I convert gas consumption from m³ to kWh?

You multiply gas consumption in cubic meters by the calorific value and the conversion factor. This gives you the energy use in kilowatt hours.

Why does the gas bill show kWh instead of m³?

Because billing is based not only on gas volume but mainly on its energy content. That is why gas consumption is converted into kWh.

What is a typical calorific value for gas?

The exact calorific value can vary. In many cases it is roughly around 10 kWh per m³, depending on the gas and the supplier.

Why do my real gas costs differ from this calculator?

Differences can result from tariff details, the base fee, price changes, rounding, advance-payment logic or different billing periods.

What does the CO2 estimate tell me?

It gives you a rough idea of the emissions linked to your calculated gas use. That is useful for first comparisons and orientation, but it does not replace an official emissions statement.

Is the result binding?

No. The result is for general information and first-pass estimates only.