Business Gas Bill Calculator

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Calculate your gas bill then compare current prices to see if you could save!
It's 3 easy steps. Compare prices, choose your new business gas tariff & complete your switch online.

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Calculate Your Gas Bill Online

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.

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Imperial Meters (ft³)

Metric Meters (m³)

Note: Imperial meters measure in hundreds of cubic feet (100 ft³). If your meter shows a usage of 1, you've actually used 100 ft³.

If you enter "1" into the imperial meter calculator and "3.28" into the metric calculator, you get the same kWh usage because 100ft³ equals 2.83m³. You should also check business gas prices to ensure the unit rate per kWh is competitive for your business.

Enter your details in our simple energy comparison form to get accurate deals based on your business usage.

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Calculations Explained

Below is an explanation of the terms used in the calculator. Note: The gas measurement is joules, so the above calculation automatically converts to kWh by dividing by 3.6.

The Multiplier factor converts imperial to metric. 3.28 feet equals one metre.
The Conversion factor is an industry figure to account for atmospheric pressure.
The Calorific value adjusts for changes in the composition of gas when burned.
The kWh conversion 1-kilowatt hour is equivalent to 3.6 million joules.

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.

Calorific Values by Supplier

These values vary a little by each supplier, are governed by legislation and provided by the National Grid. The values provided are always rounded down to the next decimal place. The current values are British Gas 39.3, EDF 39.1, EON 39.2, ScottishPower 39.0 and SSE 39.6. Gas pricing differs from electricity rates per kwh due to the nature of the fuel source. Calculating business electricity bills is as simply as taking a meter reading and multiplying by your unit rate.

Gas Meter Installation Advice for Your Business

It’s important to remember that type of business gas meter installed at your premises can impact your energy bills. Each meter type will offer different benefits for your business.

A standard gas meter is the most common meter type. Each unit of gas consumed will be charged at the same rate and you will likely be required to send manual gas meter readings.

A smart gas meter will send automatic readings to your supplier. This ensures accurate billing and helps your business avoid being overcharged.

Two and three rate gas meters charge different unit rates depending on the time of the day. This allows you to pay a lower unit rate during off-peak hours. If you’re business mainly operates at evenings and weekends, a two or three rate meter could reduce your gas bills.

At Business Energy, we offer a specialist service to arrange your business gas meter installation. Our expert team can support you throughout the meter installation process and will aim to complete your install within 2 weeks.

When you switch you business gas with us, you can even benefit from a free gas meter installation!

Gas Bill Calculator FAQs

How Can I Gain a Better Understanding of My Gas Bills?

For businesses of any size, carrying out a business energy audit can help you gain a better understanding of your gas costs. An energy audit allows you to understand where you use the most energy and where you could be wasting energy.

Combining this information with our gas bill calculator can allow you to discover how much you could save by implementing any energy saving measures recommended by your energy audit.
How Can I Reduce My Gas Bills?

Calculating your gas bills can be a great way of keeping track of your energy costs. However, if you’re not on the right gas tariff, you will be overpaying for the gas you use.

By providing your postcode and just a few details about your current plan, we can help you compare gas prices from a wide selection of energy suppliers.

Switching business gas suppliers is simple. At BusinessEnergy.com, we will take care of the entire switching process allowing you to sit back, relax, and save.
Is There a Charge for Switching Gas Suppliers?

Any charges for switching your gas supplier will depend on your current contract. Most business energy contracts will contain high exit fees so it’s important to factor these into any savings if you are thinking of switching early.

If you’re approaching the end of your contract, or you’re on out-of-contract rates, you can switch your business gas without charge.

When you switch with BusinessEnergy.com, we’ll stay in touch with you to ensure you can stay on the right rates when your new contract is coming to an end.