On my recent bill I used 37.320 cubic meters of gas. My house is unoccupied at the moment so only using minimal gas.
I followed the conversion calculation ;
37.32 x 43 x 1.02264 divided by 3.6 = 455.8588 kwh
However, on my bill it says energy use 1167.073 kwh and I was charged for 1167.073 kwh.
I don’t know where I am going wrong with my calculation.
Can anyone help me please. I have tried to email OVO customer services but have not received a reply.
Thank you
Best answer by Firedog
Hi, that looks like they are using the calculation for an imperial meter. The x43 is towards the high end of the scale for calorific value …
Gas transporters are required to maintain the CV between 38 and 41 MJ/m³.
If you reverse engineer
1167.073 x 3.6 kWh/MJ
____________________________________ = 38.9 MJ/m³
37.320 m³ x 1.02264 x 2.83 m³/100 ft³
The correct usage calculation is thus:
37.320 x 1.02264 x 38.9 ÷ 3.6 = 412.393 kWh.
[And, of course, just to be sure, 412.393 x 2.83 = 1167.073 - OVO’s wrong usage figure.]
It may be better to use webchat (Mon-Sat) or messaging, e.g. on X (also on Sundays) rather than email to contact support: Methods for contacting OVO - (February/March 2026) | The OVO Forum
+9Hi, that looks like they are using the calculation for an imperial meter. The x43 is towards the high end of the scale for calorific value so might not be correct but you should double check if you have an imperial or metric meter and then get things changed if needed
If it’s not the issue, please check if there is no any gas leak. Often our gas meters are outside of our flats, so it could go unnoticed.
On my recent bill I used 37.320 cubic meters of gas. My house is unoccupied at the moment so only using minimal gas.
I followed the conversion calculation ;
37.32 x 43 x 1.02264 divided by 3.6 = 455.8588 kwh
However, on my bill it says energy use 1167.073 kwh and I was charged for 1167.073 kwh.
I don’t know where I am going wrong with my calculation.
Even if I was being billed in error for an imperial meter then the calculation would be:
Convert ft3 to m3 - 37.320 x 0.0283168 = 1.05678 cubic meters
Then, 1.05678 x 43 x .01224 divided by 3.6 = .1545
So, I do not think I am being billed on an imperial meter instead of a metric meter.
Can anyone help me please. I have tried to email OVO customer services but have not received a reply.
Thank you
On my recent bill I used 37.320 cubic meters of gas. My house is unoccupied at the moment so only using minimal gas. I have a metric meter.
I followed the conversion calculation ;
37.32 x 43 x 1.02264 divided by 3.6 = 455.8588 kwh
However, on my bill it says energy use 1167.073 kwh and I was charged for 1167.073 kwh.
I don’t know where I am going wrong with my calculation.
Even if I was being billed in error for an imperial meter then the calculation would be:
Convert ft3 to m3 - 37.320 x 0.0283168 = 1.05678 cubic meters
Then, 1.05678 x 43 x .01224 divided by 3.6 = .1545
So, I do not think I am being billed on an imperial meter instead of a metric meter.
Can anyone help me please. I have tried to email OVO customer services but have not received a reply.
Thank you
Sorry , just worked it out. I have a ft3 meter and realised I have to multiply unit by 2.83 to get m3.
Having a bad day!!!
+7Hi, that looks like they are using the calculation for an imperial meter. The x43 is towards the high end of the scale for calorific value …
Gas transporters are required to maintain the CV between 38 and 41 MJ/m³.
If you reverse engineer
1167.073 x 3.6 kWh/MJ
____________________________________ = 38.9 MJ/m³
37.320 m³ x 1.02264 x 2.83 m³/100 ft³
The correct usage calculation is thus:
37.320 x 1.02264 x 38.9 ÷ 3.6 = 412.393 kWh.
[And, of course, just to be sure, 412.393 x 2.83 = 1167.073 - OVO’s wrong usage figure.]
It may be better to use webchat (Mon-Sat) or messaging, e.g. on X (also on Sundays) rather than email to contact support: Methods for contacting OVO - (February/March 2026) | The OVO Forum
On the different post regarding the same issue they wrote: “Sorry, just worked it out. I have a ft3 meter and realised I have to multiply unit by 2.83 to get m3. Having a bad day!!!”
+7“Sorry, just worked it out. I have a ft3 meter and realised I have to multiply unit by 2.83 to get m3. Having a bad day!!!”
It’s a good job you can’t see all the corrections I had to make to my post after submission! You need a brain much more agile than my old one to get this sort of stuff properly transcribed from the calculator and formatted to make the best sense first time. Many people have difficulty distinguishing between kW and kWh, so it’s not surprising that things go wrong when you need to apply the right factor in the right place to convert megajoules to kilowatt hours, even though you remember from ‘O’ level physics that one Watt equals one Joule per second.
+4Hey
I’m glad to see our community were able to help clear that up for you!
Feel free to pop back anytime if you’ve ever got any other questions.😊
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