Energy and carbon conversion guide for reporting

Our conversion factors guide can help you calculate your organisation’s carbon emissions and offers guidance on how to convert energy use and carbon emissions into common units. 

conversion factors guide cover page


This guide and interactive spreadsheet provides a number of useful conversion factors to help you calculate energy consumption in common units and to work out the greenhouse gas emissions associated with energy use.  

Calculating your energy use and carbon emissions can be useful for monitoring energy use internally within a business, and also for public reporting of energy consumption and carbon emissions.

Updated: January 2024; Publication code: CTV085


  • Introduction
  • Greenhouse gas conversions
  • Energy conversion factors
  • Passenger transport conversion factors
  • Heat content of fuels


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