Research and analysis

Greenhouse gas reporting: conversion factors 2024

These emission conversion factors are for use by UK and international organisations to report on certain 2024 greenhouse gas emissions.

• From: Department for Energy Security and Net Zero
• Published: 8 July 2024
• Last updated: 30 October 2024 — See all updates

Documents

Conversion factors 2024: condensed set (for most users)

MS Excel Spreadsheet, 1.78 MB

This file may not be suitable for users of assistive technology.

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Conversion factors 2024: full set (for advanced users)

MS Excel Spreadsheet, 1.96 MB

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Conversion factors 2024: flat file (for automatic processing only)

MS Excel Spreadsheet, 531 KB

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Conversion factors 2024: methodology

PDF, 1.81 MB, 153 pages

Conversion factors 2024: major changes

PDF, 343 KB, 22 pages

Conversion factors 2024: statement of voluntary compliance with the Code of Practice for Statistics

HTML

Details

Update 30 October 2024

Due to a minor rounding error in the conversion factors 2024 tables published in June, we have updated a small number of factors for Passenger Vehicles, Delivery Vehicles, Business Travel – Land, Freighting Goods, and Managed Assets – Vehicles.

These are the factors for methane emissions from diesel use in km units by some vehicles. Further details are in the relevant conversion factors spreadsheets.

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 set (only available from 2014): 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.

Defra’s Environmental reporting guidelines provide more detail.

Published 8 July 2024
Last updated 30 October 2024 + show all updates

1. 30 October 2024

   Due to a minor rounding error in the conversion factors 2024 tables published in June, we have updated a small number of factors.

2. 8 July 2024

   First published.