Research and analysis
Greenhouse gas reporting: conversion factors 2025
These emission conversion factors are for use by UK and international organisations to report on 2025 greenhouse gas emissions.
Documents
MS Excel Spreadsheet, 1.75 MB
This file may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email
alt.formats@energysecurity.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
MS Excel Spreadsheet, 1.71 MB
This file may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email
alt.formats@energysecurity.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
MS Excel Spreadsheet, 494 KB
This file may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email
alt.formats@energysecurity.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
PDF, 1.77 MB, 157 pages
This file may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email
alt.formats@energysecurity.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
PDF, 219 KB, 13 pages
This file may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email
alt.formats@energysecurity.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
Details
There are 3 sets of conversion factors:
-
condensed set: this abridged version of the full set is easiest to navigate and most frequently requested. Recommended for most, and new, users of conversion factors
-
full set: contains all available factors for the selected year. Recommended for advanced users only, due to the volume of information
-
flat file: contains same data as the full set but designed for use in automated processes. Not recommended for most users
The methodology paper explains how the conversion factors are derived.
New users: read the introductory worksheet in the latest condensed set of conversion factors, and the guidance at the top of each individual worksheet.
Regular users: read the ‘what’s new’ sheet which highlights the significant changes for that update: this will ensure consistent and comparable reporting year-on-year.
The Environmental reporting guidelines provide more detail.
Updates to this page
Published 10 June 2025