Home
Back
Gas Bill Formula:
| From: | To: |
The gas bill formula calculates your gas charges based on your meter readings, the calorific value of the gas, and the rate charged by your provider. It provides an accurate way to estimate your gas bill before receiving the official statement.
The calculator uses the gas bill formula:
Where:
Explanation: The formula first calculates your gas usage by subtracting the previous reading from the current reading, then converts this volume to energy using the calorific value, and finally calculates the cost by multiplying by the rate.
Details: The calorific value varies slightly depending on the gas composition but is typically around 38-41 MJ/m³. The rate is set by your gas provider and may include standing charges not accounted for in this calculation.
Tips: Enter your current and previous meter readings in m³ (found on your gas meter), the calorific value (provided by your gas company or use the default), and the rate per MJ from your tariff. All values must be positive numbers.
Q1: Where can I find the calorific value?
A: Your gas provider usually publishes this information on their website or bills. The default value of 38.6 MJ/m³ is a typical average.
Q2: Why is my actual bill slightly different?
A: This calculator doesn't include standing charges, VAT, or other fees that may appear on your actual bill.
Q3: How often should I read my gas meter?
A: For accurate tracking, read your meter monthly at about the same time each month.
Q4: What if my meter measures in cubic feet?
A: Convert cubic feet to cubic meters by multiplying by 0.0283 before entering the values.
Q5: Does this work for all gas providers?
A: The basic calculation is universal, but check with your provider for any specific adjustments they might make.