This calculator helps convert gas meter readings in cubic metres (m³) or cubic feet (ft³) into kilowatt hours (kWh), the unit used on UK energy bills
Gas Meter Reading to kWh Calculator
Many UK gas meters measure volume (m³ or ft³) rather than energy.
Energy suppliers convert this to kWh using a standard formula.
Quick Guide
Cubic Metres (m³)
1 m³ ≈ 11 kWh
Cubic Feet (ft³)
1 ft³ ≈ 0.31 kWh
### Example
10 m³ of gas ≈ 110 kWh
100 ft³ of gas ≈ 31 kWh
These are approximate values used by suppliers when calculating your bill.
Full formula used by suppliers:
kWh = Volume × 1.02264 × Calorific Value ÷ 3.6
Typical UK calorific value: *39–40 MJ/m³
Gas Meter kWh Calculator
Your result will appear here.