Defra released the latest set of UK Government Greenhouse Gas (GHG) conversion factors for 2025. These updated factors are essential for calculating carbon emissions across a wide range of activities and processes.
Compare Your Footprint applies these average carbon conversion factors for UK-based organisations, and, where appropriate, for some international operations, in line with the Greenhouse Gas (GHG) Protocol’s average data method.
The full 2025 GHG conversion factors
Previous years’ datasets
A summary of key changes in 2025
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Use our carbon accounting software, Compare Your Footprint, to streamline your carbon accounting, with the latest conversion factors built in.
For help and guidance about carbon footprinting, using these factors, and queries about international factors, please get in touch with us!