Pulse Count to watts

Hi

I’ve been setting up a new Pulse Count I’m going to using it to monitor me Gas meter I have got the Wh Accumulator work now so I can see the kWh and kWh/d but I would also like to monitor the gas usage in real-time like I do with the grid and solar power using the CT sensors I understand it want be as accurate as the CT sensors

But can anyone help me with that calculation to convert the RAW Pulses or Wh Accumulator to watts

Thanks Steve