Gas Meter Readings: How to Convert Gas Units (M3) into kWh

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Find out how to take a gas meter reading?

Gas units to kWh converter

What type of meter have you got?

Number of units used:

Your gas usage in kWh:

With the above calculations you can ensure that your supplier is billing you correctly for your type of meter & gas usage. If you need any further help reading your gas meter, take a look at our how to read your meters page

It is very important to be aware of what type of gas meter you have to ensure that your supplier is charging you correctly. Your supplier should be able to recognise what type of meter you have but it is always a good idea, especially when changing suppliers, that they know the type of meter you have.

Below are illustrations and examples of what each type of meter will display in order for you to be able to recognise the type of meter you have, which will be either an imperial or a metric gas meter.

Imperial gas meters

If your meter is an old imperial gas meter, which will measure gas in cubic feet, it will have the words "cubic feet" or the letters ft3 shown on the front of the meter.

Imperial Gas Meter - showing gas units used in 100 cubic feet

Metric gas meters

If your meter is a newer metric meter, which measures gas in cubic meters, it will state "cubic meters" or display M3 on the front of the meter.

Metric Gas Meter - showing gas units used in cubic meters

Your gas bill explained

Electricity consumption is typically stated in kilowatt-hours (kWhs) on your meter and bills. However, when gas is referred to it can either be measured in units by your meter, or kilowatt-hours on your bill - which can sometimes lead to confusion.

To help you better understand your gas usage in terms of how much you're being charged, we've put together a calculator that works out the unit to kWh conversion for you. All you have to do is state whether you have an imperial or metric meter and how many units you've used, and the rest is done for you.

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