Gas Cost Calculations Help Needed

[hc4361]

Maths is not my strong point and I know there is a formula to work out the cost of gas units shown on the meter.

I have used 70 units and the cost per Kwh is 2.6p. I do know it's not a matter of multiplying 70 by 2.6

Hope one of you clever people can help. Many thanks

[Bigbad]

You would need to know your suppliers Calorific Value and Volume Correction.
This is what it says on my EDF bills:

Your gas meter measures usage in units, but like all suppliers, we have to do a bit of maths to turn it into kWh. Here's how it works:
GAS UNITS USED X CALORIFIC VALUE (39.3) X VOLUME CORRECTION (1.02264) ÷ 3.6

Don’t forget the standing charge too.

[New Judge]

The 70 units is almost certainly cubic metres of gas used. A very quick and fairly accurate calculation is to multiply that figure by 11.1 to convert to Kwh.

so, 70 x11.1 = 770Kwh
770 x 2.6p = £20.20

Make sure your gas supplier does not make a daily charge as well

[New Judge]

Using Bigbad's calculation means you are multiplying the cubic metres by 11.16, so 11.1 is a fair approximation.

[hc4361]

Many thanks to you both. I'll check the Calorific Value and Volume Correction now

[hc4361]

Does this make sense?
Imperial/Metric Rate 2.83
Calorific Value 39.3
Volume Correction 1.02264
Conversion to Kwh 3.6

[hc4361]

Doh! Just realised my values are the same as Bigbad's, so all is good.

Thanks again.