Gas Bill Calculator
Your gas meter measures usage in either cubic feet or cubic meters. Readings from the meter are then converted to kilowatt hours (kWh) for billing purposes. If you have your meter readings available, enter this data into the gas bill calculator below to estimate your next bill.
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Your gas meter provides data in cubic feet or metres. Readings are taken then converted to kilowatt hours (kWh) for billing purposes. If you have your meter readings to hand, then enter your data into the gas bill calculator below to estimate your next bill.
Explanation of Gas Calculations
Below is a breakdown of the terms used in the calculator:
- Gas Measurement: The measurements for gas are in joules. The calculation automatically converts joules to kilowatt-hours (kWh) by dividing by 3.6.
- Multiplier Factor: This factor is used to convert imperial measurements to metric. Specifically, 3.28 feet is equivalent to one meter.
- Conversion Factor: This is an industry-standard figure that accounts for variations in atmospheric pressure.
- Calorific Value: This adjusts for changes in the composition of gas when it is burned.
- kWh Conversion: One kilowatt-hour (1 kWh) is equal to 3.6 million joules.
This revised text provides a clearer understanding of each term and improves overall readability.
Worked Examples
A previous meter reading of 7,380 with a current reading of 7,842 equals a difference of 482 units. Here's how you convert gas units to kWh.
Imperial Calculation
Here's how to convert cubic feet (ft3) to kWh from your gas meter reading.
482 unit used X 2.83 to convert to cubic metres X 1.02264 X 39.2 calorific value divided by 3.6 provides 15,189 kWh. At 2.84p/kWh provides an estimated bill of £431.38.
482 x 2.83 x 1.02264 x 39.2 ÷ 3.6 = 15,189 x 2.84 = £431.38.
Metric Calculation
Alternatively, convert cubic metres (m3) to kWh gas units.
482 unit used X 1.02264 X 39.2 calorific value divided by 3.6 provides 5367.27 kWh. At 2.84p/kWh provides an estimated bill of £152.43.
482 x 1.02264 x 39.2 ÷ 3.6 = 5367.27 x 2.84 = £152.43.