Gas cost calculator
Enter your gas rate, standing charge and yearly kWh. Blank boxes fall back to the official Ofgem figure for your region.
Leave blank to use the official London benchmark of 7.50p per kWh.
Leave blank to use the official benchmark of 29.52p a day.
Your gas cost for a year
£970
About £81 a month
Source: Ofgem · Period: 1 July to 30 September 2026 · Last updated: 2026-09-13
- No registration
- No email required
- Instant calculation
- Latest official Ofgem data
If your meter reads in cubic metres
Convert the reading to kWh first, otherwise the answer will be roughly eleven times too small. The gas m³ to kWh calculator does the conversion and the costing in one step.
Mistakes that change the answer
- Costing cubic metres as if they were kWh.
- Assuming gas usage is even across the year — most of it lands in four winter months.
- Comparing a gas rate against an electricity benchmark.
Common questions
Why is my gas usage so much higher than my electricity usage?
Does this include VAT?
See whether you could pay less
Your results above are based on official Ofgem figures and your own numbers. Switching is optional and nothing here changes what the calculation says.
Compare your tariff against anotherAffiliate disclosure — commercial links never change your results or the Ofgem figures we show.
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