Tecnicalities by sector
Version 4The current version of the calculator (Version 4) was published in January 2019 to incorporate the latest emission factors and other information.
The main change in Version 4 from Version 3 is:
Version 3The previous version of the calculator was Version 3, published in March 2008. It is still available at https://www.carbonindependent.org/index_v3.html to enable a like-for-like comparison with previous carbon footprint estimates made using version 3.
The main changes in version 3 from version 2 were:
The factors unchanged were:
Updates were made in December 2013 to include coal, wood, bottled gas, and newer "green" electricity tariffs.
Cosmetic changes were made in February 2015, together with a change from .htm to .html filetype, but there were no changes to the underlying calculations.
Version 2This was first published in August 2007 - and was superseded in March 2008.
Version 1This was first published in February 2007 - and was superseded in August 2007.
First published: 2008
Last updated: 6 Apr 2019